The previous chapter explained that the Christian life is a life of love, brought about by the power of God’s Spirit, which is received through faith in Christ. This defines both the Christian’s task and the source of power that enables it. But this leads to a deeper question: What is the ultimate goal? For what purpose is this work being done?

Even the nature of the tools and power we use for our present lives suggests there is a future destination. Just as the power of sin was never limited to only the wrong deeds done here and now—because it points toward something worse—so too, the power of the Spirit isn’t limited to what we see Him doing in us right now. Sin hinted at limitless evil and terrifying judgment; in the same way, the Spirit gives a sense of something greater yet to come. The Christian is moved by a mysterious force of goodness, guided along unknown paths to a future, blessed destination.

The worldly-minded man sees very little of the Christian’s real life. He observes only the outward actions, not the vast power at work within. The Christian life is not proven true merely because it improves the world—though it certainly does that to a far greater degree than other religions. Other belief systems may help people become “better,” but only Christianity makes people truly good. Why? Because it alone points to one perfect human life, Jesus Christ, and it promises that one day other lives will be made to resemble His.

The Christian is the only person who truly touches the source of absolute goodness—a goodness that assures us that every trace of evil will one day be wiped away. The Christian’s love for others, which the world admires, is in reality only a by-product of a greater love for God. Love for people is just one branch of that deeper love, unfolding naturally from it.

The Christian’s relationship with God is not like that of a lifeless tool being used by a craftsman. It’s a relationship between a free individual and a loving Father. The Christian’s work is meaningful not despite being God’s work, but because it is also his own. The love between the Christian and his God—though unseen by the world—is what holds the promise of final goodness.

The Christian’s practical life of love, then, is part of a greater journey. The Christian lives by hope. Critics often mock this, saying that Christians only do what’s right to earn rewards in heaven. They claim the truly noble person is the one who does good without any hope of reward, even if he believes death ends everything. That might sound noble at first, but it falls apart under closer inspection.

Heaven isn’t about selfish pleasure. It’s not just about happiness—it’s about goodness. And that goodness is realized through union with the only One who is truly good. If you believe that such a relationship is permanently ended at death, you won’t be inspired to live for others. The truth is, mankind is only worth serving if we are more than just advanced animals. If we are eternal beings, then we have purpose. But if human life is merely fleeting and no different in essence from animal life, then it leads to decay and despair.

Despite what is commonly said today, the Christian religion is rooted in the hope of heaven. That hope is not selfish—it is one of the highest, noblest thoughts to ever enter the human heart. Why? Because it’s not about ourselves—it’s about the glory of God. Heaven is about God being glorified forever by those He made. Our ultimate purpose isn’t just to glorify God and enjoy Him—it is, in the words of the Westminster Catechism, “to glorify God and to enjoy Him forever.”

This idea of heaven is found all through the New Testament. It was central to Jesus’ teaching. It matters deeply, not only for its own sake, but because it is directly tied to what the New Testament says about faith. Faith is closely linked to hope, and it is often set in contrast to sight. Faith gives us knowledge of things to come. So, if we’re to understand what the Bible says about faith, we must understand what it says about heaven.

But we won’t understand heaven properly if we ignore what the New Testament says about hell. Heaven and hell are presented as opposites. That contrast appears most vividly—perhaps surprisingly—in the teachings of Jesus Himself. Jesus doesn’t just speak of heaven. He speaks very clearly about hell.

Jesus once said, “Do not fear those who kill the body but are not able to kill the soul. Rather, fear him who is able to destroy both soul and body in hell” (Matthew 10:28, UASV).

These were not the words of Jonathan Edwards, or of Cotton Mather, or Calvin, or even the apostle Paul. These words came directly from Jesus.

And if you read the Gospels and gather all of Jesus’ teachings on this topic, you will see clearly that both heaven and hell are central to His message. This reality alone refutes the modern idea that Jesus’ message was only about this life or some vague moral uplift. Some claim Jesus was just interested in promoting a general fatherly view of God and improving human life, not concerned with the afterlife. But that claim is completely false.

Try reading a Gospel harmony—a side-by-side comparison of the four Gospels—and highlight every time Jesus speaks of eternal joy or eternal judgment. You’ll be surprised, especially if you’ve been influenced by modern portrayals of Jesus. These passages are found throughout His teachings. He frequently warned of hell and urged people to prepare for eternal life.

This idea runs through many of His parables—the parables of the rich man and Lazarus, the unjust steward, the ten virgins, the wheat and the tares, the marriage of the king’s son, and many more. It is also plain in His direct teachings. The judgment scene in Matthew 25 is simply the culmination of a message repeated throughout the Gospels: “And these shall go away into everlasting punishment, but the righteous into life eternal” (Matthew 25:46, UASV). This is not an isolated text—it represents the core of Jesus’ teaching.

If any teacher ever focused on eternity, it was Jesus of Nazareth. His message was never limited to improving this present world. It was focused on eternal realities.

These references to eternal judgment aren’t rare insertions or marginal comments. They are deeply woven into the Gospel accounts. Even the most extreme critics of the Bible haven’t been able to remove this element from the teachings of Jesus. And it’s not just how often Jesus talks about these things—it’s the nature of what He says. The themes of heaven and hell aren’t just added on; they’re essential to His message. If you took them out, you wouldn’t just lose some details—you would lose the entire Gospel.

Remove the idea of eternal life and judgment, and you don’t even have Jesus’ ethical teaching left. It is a false idea that Jesus separated theology from ethics. Jesus never taught that we can strip away doctrines about God, judgment, and eternity while keeping only His moral advice. Instead, His ethical teachings are grounded in eternal accountability.

He once said, “And if your eye causes you to stumble, pluck it out, and throw it from you. It is better for you to enter into life with one eye, than having two eyes to be cast into the hell of fire” (Matthew 18:9, UASV). That statement captures His intensity. It reveals that the seriousness of sin is rooted in the reality of eternal consequences.

Jesus used this contrast—between life and destruction—to move people to fear. He said, “Do not fear those who kill the body, but are not able to kill the soul. Rather, fear him who is able to destroy both soul and body in hell” (Matthew 10:28, UASV). In Luke’s Gospel, we find a similar message: “But I will warn you whom you should fear: fear the one who after he has killed, has authority to cast into hell. Yes, I tell you, fear him!” (Luke 12:5, UASV).

Many today say that fear has no place in religion. They argue that threatening people with hell is a low, shameful tactic. But that is not what Jesus believed. He clearly and repeatedly used the motive of fear. Anyone who rejects fear as part of religious truth is contradicting Jesus Himself.

So, we are forced to choose—will we follow the real Jesus or the modern version shaped by the preferences of our day?

Now, let’s think clearly about fear. Is all fear degrading? No—it depends entirely on what we are afraid of. The same passages in which Jesus commands us to “fear” also command us to “not fear.” We are told not to fear man, but to fear God. The fear of God is the tool that sets us free from the fear of man.

History confirms this. In many ages, Christians have boldly stood before kings and rulers, declaring the truth with confidence. How? Because they feared God more than man. They stood firm not out of pride, but because of their faith.

Now, even the fear of God could become harmful if our view of God is wrong. If we see Him as petty or cruel, our fear becomes enslaving. But when we understand that we’re dealing with a holy and just God—the moral Ruler of all—we realize that our fear is justified.

When we picture that final day, when all lies are stripped away and we stand completely exposed before God’s judgment seat, we know this is no trivial matter. It is not about what others have done—it is about our own sins being judged.

Can we really stand before God and say, “I deserve to live”? Can we join the proud poet Henley who wrote:

Out of the night that covers me,
Black as the Pit from pole to pole,
I thank whatever gods may be
For my unconquerable soul.

Or these lines:

It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate:
I am the captain of my soul.

This kind of confidence is an illusion. It sounds bold, but it’s based on denial of reality. The truth is, we are not unconquerable. We are not in control of our fate. We are not the captains of our souls.

Consider this: how many people have found themselves doing things they once thought impossible? A man might see some evil act and say, “I could never do that.” But later, after ignoring conscience and lowering his standards, he finds himself doing exactly that. The horror becomes normal. This is the terrible power of sin—it hardens us slowly.

Even in this life, we are not truly in control. Most of us struggle even to control our own bodies, much less our souls. Claiming to master our destiny by repeating proud slogans doesn’t make it true. In fact, that kind of pride is not noble—it’s foolish. There is nothing honorable about rebelling against God’s moral order.

So, does this mean we’re doomed to live in fear forever? Must we only expect judgment and destruction?

No—Jesus came to deliver us from fear.

But notice how He did it. He didn’t do it by sugar-coating the truth. He didn’t say, “Don’t worry—everyone will be fine in the end.” He didn’t describe heaven as a bland, formless existence with no judgment. And He didn’t present God as a smiling grandfather who shrugs at sin.

Instead, Jesus taught the truth plainly—about sin, judgment, and hell—and then offered the only real solution: trust in Him.

He made it possible for us to face the coming judgment without terror. Not because we deserve it, but because we are covered by His righteousness.

Even the believer still fears God—but not in the same way. It is not the fear of ruin, but the fear of discipline, or of having fallen short. It’s a fear born from the knowledge of what could have happened if Christ had not saved us. And this kind of fear actually deepens our love. Those who truly love the Savior are the ones who most clearly see what He saved them from.

Lives shaped by this understanding are strong—not because they deny the facts, but because they face the facts. These lives rest on the unshakable foundation of God’s grace. When such people come to die, they do not tremble in despair. Instead, they fall asleep in Jesus, trusting Him even as they enter that dark place we call death. They believe they will see His face.

These references to eternal judgment aren’t rare insertions or marginal comments. They are deeply woven into the Gospel accounts. Even the most extreme critics of the Bible haven’t been able to remove this element from the teachings of Jesus. And it’s not just how often Jesus talks about these things—it’s the nature of what He says. The themes of heaven and hell aren’t just added on; they’re essential to His message. If you took them out, you wouldn’t just lose some details—you would lose the entire Gospel.

Remove the idea of eternal life and judgment, and you don’t even have Jesus’ ethical teaching left. It is a false idea that Jesus separated theology from ethics. Jesus never taught that we can strip away doctrines about God, judgment, and eternity while keeping only His moral advice. Instead, His ethical teachings are grounded in eternal accountability.

He once said, “And if your eye causes you to stumble, pluck it out, and throw it from you. It is better for you to enter into life with one eye, than having two eyes to be cast into the hell of fire” (Matthew 18:9, UASV). That statement captures His intensity. It reveals that the seriousness of sin is rooted in the reality of eternal consequences.

Jesus used this contrast—between life and destruction—to move people to fear. He said, “Do not fear those who kill the body, but are not able to kill the soul. Rather, fear him who is able to destroy both soul and body in hell” (Matthew 10:28, UASV). In Luke’s Gospel, we find a similar message: “But I will warn you whom you should fear: fear the one who after he has killed, has authority to cast into hell. Yes, I tell you, fear him!” (Luke 12:5, UASV).

Many today say that fear has no place in religion. They argue that threatening people with hell is a low, shameful tactic. But that is not what Jesus believed. He clearly and repeatedly used the motive of fear. Anyone who rejects fear as part of religious truth is contradicting Jesus Himself.

So, we are forced to choose—will we follow the real Jesus or the modern version shaped by the preferences of our day?

Now, let’s think clearly about fear. Is all fear degrading? No—it depends entirely on what we are afraid of. The same passages in which Jesus commands us to “fear” also command us to “not fear.” We are told not to fear man, but to fear God. The fear of God is the tool that sets us free from the fear of man.

History confirms this. In many ages, Christians have boldly stood before kings and rulers, declaring the truth with confidence. How? Because they feared God more than man. They stood firm not out of pride, but because of their faith.

Now, even the fear of God could become harmful if our view of God is wrong. If we see Him as petty or cruel, our fear becomes enslaving. But when we understand that we’re dealing with a holy and just God—the moral Ruler of all—we realize that our fear is justified.

When we picture that final day, when all lies are stripped away and we stand completely exposed before God’s judgment seat, we know this is no trivial matter. It is not about what others have done—it is about our own sins being judged.

Can we really stand before God and say, “I deserve to live”? Can we join the proud poet Henley who wrote:

Out of the night that covers me,
Black as the Pit from pole to pole,
I thank whatever gods may be
For my unconquerable soul.

Or these lines:

It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate:
I am the captain of my soul.

This kind of confidence is an illusion. It sounds bold, but it’s based on denial of reality. The truth is, we are not unconquerable. We are not in control of our fate. We are not the captains of our souls.

Consider this: how many people have found themselves doing things they once thought impossible? A man might see some evil act and say, “I could never do that.” But later, after ignoring conscience and lowering his standards, he finds himself doing exactly that. The horror becomes normal. This is the terrible power of sin—it hardens us slowly.

Even in this life, we are not truly in control. Most of us struggle even to control our own bodies, much less our souls. Claiming to master our destiny by repeating proud slogans doesn’t make it true. In fact, that kind of pride is not noble—it’s foolish. There is nothing honorable about rebelling against God’s moral order.

So, does this mean we’re doomed to live in fear forever? Must we only expect judgment and destruction?

No—Jesus came to deliver us from fear.

But notice how He did it. He didn’t do it by sugar-coating the truth. He didn’t say, “Don’t worry—everyone will be fine in the end.” He didn’t describe heaven as a bland, formless existence with no judgment. And He didn’t present God as a smiling grandfather who shrugs at sin.

Instead, Jesus taught the truth plainly—about sin, judgment, and hell—and then offered the only real solution: trust in Him.

He made it possible for us to face the coming judgment without terror. Not because we deserve it, but because we are covered by His righteousness.

Even the believer still fears God—but not in the same way. It is not the fear of ruin, but the fear of discipline, or of having fallen short. It’s a fear born from the knowledge of what could have happened if Christ had not saved us. And this kind of fear actually deepens our love. Those who truly love the Savior are the ones who most clearly see what He saved them from.

Lives shaped by this understanding are strong—not because they deny the facts, but because they face the facts. These lives rest on the unshakable foundation of God’s grace. When such people come to die, they do not tremble in despair. Instead, they fall asleep in Jesus, trusting Him even as they enter that dark place we call death. They believe they will see His face.

This is why it is misleading to say, “Religion and science belong in totally separate spheres.” That idea may have some truth when applied to certain specialized fields. For example, the Bible doesn’t try to explain chemistry or astronomy in detail. It’s not a lab manual. But Christianity makes historical claims, and those are definitely within the scope of real scientific inquiry.

At the center of Christianity are events that happened in real places, in real time—especially in first-century Palestine. The death and resurrection of Jesus aren’t abstract ideas or religious myths. They are historical events. And if history matters, then these events must be evaluated seriously, just like any other facts from the past.

That’s why Christians can’t accept the easy excuse that religion and science never conflict because they deal with different subjects. It sounds polite and safe—but it’s wrong. If Christianity is based on facts, then it cannot retreat into a private world of feelings and morals. It must take its stand in the public square of truth.

Christianity is not just a collection of spiritual ideals. It’s a claim about what really happened. And when we receive these truths by faith, we’re not being unscientific—we are responding to real evidence. In fact, Christianity calls us to think, not avoid thinking. It invites us to build our understanding on a solid foundation.

We don’t need to be afraid of this. True Christianity is based on sobriety and truth. The problem today isn’t that people are thinking too much—it’s that they’re thinking too little. If more people opened their minds to all the evidence—including the testimony of Scripture and the reality of their own souls—they would be led back to faith.

We should also remember that not all knowledge can be measured in a lab. The evidence for Jesus often involves spiritual perception—and it is especially strong when someone brings it into contact with their own heart. The more honestly a person looks at Jesus, the stronger their sense that He is real, that His witness is true, and that He can be trusted.

So yes, Christian faith is a rational faith. It is “the substance of things hoped for, the evidence of things not seen” (Hebrews 11:1, UASV).

Now, we must close with one last, very practical question. We’ve seen that faith is the means of salvation. Without it, no one who understands the message can be saved. But how strong does that faith need to be?

The New Testament does recognize that faith can be strong or weak. A strong, unwavering faith is something God often uses to accomplish great things. This is especially true in prayer. Jesus taught that prayer joined with faith can move mountains.

But there’s also a comforting truth. While God works through strong faith, He can also work through weak faith. The power of prayer—and even of salvation—does not depend on how strong our faith is, but on the grace of God.

God hears even our imperfect prayers. Paul reminds us that, “we do not know what we should pray for as we ought, but the Spirit himself makes intercession for us with groanings that cannot be uttered” (Romans 8:26, UASV). God gives far more than we ask. He answers not based on the strength of our asking, but out of His abundant mercy (cf. Ephesians 3:20).

So how much faith is enough for salvation?

The answer is found in one of the most touching stories in the Gospels—the healing of the demon-possessed boy in Mark 9. This story appears in Matthew and Luke too, but Mark’s account gives the most detail. According to tradition, Mark’s Gospel reflects the eyewitness memory of Peter, and in this story, the vividness of the scene confirms that.

It is a moment filled with desperation. A father brings his suffering son, begging for help. The boy is in agony, tormented by an evil spirit. The disciples had tried to help but failed.

Jesus comes down from the mountain and meets this human misery face to face. The father, hopeless, says, “If you can do anything, help us.” It’s not a confident statement—it’s full of doubt.

Jesus replies, “All things are possible to him who believes.” Then comes one of the most unforgettable cries in Scripture:
“Lord, I believe; help my unbelief!” (Mark 9:24, UASV).

This is not polished theology. It is the raw cry of the heart. It contains belief and doubt mixed together—but it is still faith. Weak, trembling, but real.

And Jesus responded to it. That broken, imperfect faith was enough.

Faith like this often arises from need. Some Christians come to Christ as children, and their faith remains strong throughout life. But others struggle. They question. They wander. What brings them to faith? Often, it is the deep awareness of sin—the realization of how lost they truly are.

Arguments and evidence are useful. We must give solid reasons for our faith. But those reasons alone won’t convince most people. Often, it takes some moment of crisis, some encounter with the emptiness of life without God, before the truth takes hold.

When that need arises—when the soul sees its guilt and cries out—then the evidence of Christianity suddenly shines like light in darkness. What once seemed unbelievable becomes beautifully necessary.

The facts of the Gospel don’t change. But our recognition of those facts depends on the condition of our hearts. The person who sees his sin clearly—who knows his desperate need—is the one most ready to believe.

So yes, the proofs of Christianity are essential. But they won’t save anyone unless that person also recognizes his need. We must bring people to see the deadly reality of sin. Only then will they grasp the glory of Christ’s salvation.

When a man finally cries out, “Lord, I believe; help my unbelief,” he is not expressing perfect faith. But it is enough. Because salvation doesn’t depend on how strong our faith is—it depends on Christ.

When you long for assurance, don’t focus on your faith. Focus on the object of your faith. Jesus is the one who saves.

Faith is not a force—it is a channel. It’s not something that earns salvation, but something that receives it.

Once the heart opens in trust, salvation comes—and it does not depart.

We don’t cling to salvation by trying to keep our faith going. It is Christ who holds us. Saving faith means committing ourselves to Him once for all. And He will never let us go. He will keep us safe in this life and in the life to come.

One final picture captures this truth beautifully.

In the second part of Pilgrim’s Progress, John Bunyan describes a character named Mr. Fearing. He was a true Christian, but he struggled with doubt all his life. When he arrived at the house of the Interpreter, he was too afraid to enter and nearly starved outside. But once brought in, he was warmly welcomed. “My Lord carried it wonderfully lovingly to him,” said his guide.

Even when he approached death, Mr. Fearing trembled. At the river, he thought he would drown forever. But we are told the waters were low that day, and he passed over with little trouble. When he came to the gate of heaven, he whispered, “I shall, I shall.”

So it is with many believers. Their faith may be weak, but it brings them to peace with God. Weak faith may not move mountains, but it will bring a soul to salvation.

Our salvation does not depend on the strength of our faith. It depends on the Savior in whom our faith rests.

If you are truly committed to Christ, then despite doubts and fears, you belong to Him forever.

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