Faith in God

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When people hear about salvation through faith, they often assume that it means our actions don’t matter. If salvation is by faith alone, they think works—or obedience—have nothing to do with it.

But this is a mistake. Christianity teaches that we are saved by faith and not by works, yet it never teaches that works are unimportant.

Let’s look more closely.

We need to be clear: Christianity makes a bold and unique claim. It says a person is made right with God only by believing, not by doing. This is what the Reformers meant when they said we are justified by faith alone.

This idea shocks a lot of people. Some find it dangerous. They say, “If you tell people that good works aren’t required to be saved, won’t that lead to sin?” In other words, if people don’t think their behavior affects their standing with God, won’t they just live however they want?

This concern isn’t new. Even in Paul’s time, people made the same objection. That’s why Paul answers this directly in Romans 6:1:

“What shall we say then? Shall we continue in sin, that grace may abound?” (UASV)

Paul’s answer is immediate and strong: “God forbid!” (Romans 6:2, KJV) or, as the UASV puts it:

“May it never be! We who died to sin, how can we live in it any longer?”

So, even though salvation comes by grace through faith, that doesn’t mean Christians are free to live in sin. In fact, the very faith that saves also changes us. If someone truly trusts in Christ, that trust begins to reshape their heart, their thinking, and their actions.

Here’s an analogy: Imagine someone drowning in a river. A rescuer comes and pulls him out. That person doesn’t then jump back into the water to drown again. No—he’s thankful, and he stays on dry ground.

It’s the same with salvation. When Christ saves us, He pulls us out of the “water” of sin. A person who’s really been rescued won’t dive back into the very sin he’s been freed from.

But let’s go deeper. When we say salvation is “not by works,” we don’t mean that Christians will do nothing good. We simply mean that the good things we do don’t earn salvation. They come afterward, as a result of our salvation—not the cause of it.

This is a crucial distinction, and the entire gospel hangs on it.

Paul makes it very clear in Ephesians 2:8–9:

“For by grace have you been saved through faith; and that not of yourselves, it is the gift of God; not of works, that no man should boast.” (UASV)

But then in the very next verse, Paul adds:

“For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them.” (Ephesians 2:10, UASV)

WALK HUMBLY WITH YOUR GOD

So we are saved by grace, not works. But we are saved for good works. They are the fruit, not the root.

Let’s take a closer look at how this confusion between faith and works has affected Christianity throughout history.

As time went on, the Church slowly drifted from Paul’s teaching. The truth that faith alone saves became mixed with the idea that people must earn their salvation through their own goodness or religious effort.

This didn’t happen suddenly. It happened slowly, over centuries. People started to feel like salvation was a reward for trying hard or following church rules. Instead of trusting in what Jesus did, they started trusting in what they could do.

By the time of the Middle Ages, the Church was teaching that salvation came through a combination of grace and works. People were taught that Jesus made salvation possible, but it was up to them to finish the job—by attending Mass, doing penance, giving to the poor, and so on. These actions were treated like spiritual payments.

Paul would have called this a different gospel. In Galatians 1:6–7, he wrote:

“I marvel that you are so quickly deserting him who called you in the grace of Christ to a different gospel; which is not another gospel: only there are some that trouble you, and want to pervert the gospel of Christ.” (UASV)

Paul knew this was serious. Changing the gospel—even slightly—was dangerous. That’s why he said in Galatians 1:8:

“But even though we, or an angel from heaven, should preach to you a gospel different from what we preached to you, let him be accursed.” (UASV)

This shows us how important it is to get the gospel right.

That’s why the Protestant Reformation was so vital. Men like Martin Luther and John Calvin didn’t invent something new. They simply brought the Church back to what Paul had always taught: Salvation is by grace alone, through faith alone, in Christ alone.

The Reformers weren’t against good works. They believed that a person saved by faith would naturally do good works. But they insisted that those works could not and should not be counted toward salvation. If you add works to faith as a requirement for being made right with God, you lose the gospel altogether.

Luther especially understood this. Before he discovered the true gospel, he had tried everything to earn God’s approval. He fasted, confessed his sins constantly, and even punished his body to make himself holy. But none of it gave him peace. It wasn’t until he understood Romans 1:17 that everything changed:

“The righteous shall live by faith.” (UASV)

That verse opened his eyes. He saw that righteousness isn’t something we create—it’s something we receive by trusting in Christ.

That’s what Paul had taught all along. In Romans 3:28, he writes:

“We reckon therefore that a man is justified by faith apart from works of the law.” (UASV)

This doesn’t mean that God saves us and then doesn’t care how we live. On the contrary, salvation changes us so deeply that we begin to live differently. But we live differently because we’re saved—not in order to be saved.

YOU CAN MAKE A DIFFERENCE

Think about a tree. If the roots are healthy, it will bear fruit. But you don’t feed the fruit to the roots. The fruit is the result of life in the tree. It’s the same with good works in the Christian life.

There’s another danger we need to watch for: legalism—the belief that obeying rules makes you right with God.

Legalism can be sneaky. It doesn’t always sound wrong at first. It might look like people just trying to live holy lives. But when someone says, “You’re not really saved unless you do this or that,” they’re adding to the gospel.

Paul faced this problem in Galatia. Certain teachers were telling Gentile Christians that they had to be circumcised and follow the law of Moses in order to be saved. Paul’s response was fierce. In Galatians 5:2, he says:

“Behold, I, Paul, say to you, that if you receive circumcision, Christ will profit you nothing.” (UASV)

That’s a strong warning. If we trust even a little bit in our own works to save us, we are saying that Christ’s work was not enough. And if Christ’s work wasn’t enough, then the cross loses its meaning.

That’s why legalism isn’t just a small error—it’s a denial of the gospel.

Paul didn’t just fight against legalism. He also had to deal with the opposite error—lawlessness. This is the idea that since salvation is by grace, it doesn’t matter how we live.

Some people in Paul’s day twisted his message. They said, “If God forgives sin, then maybe we should sin more so that grace can increase!” That sounds outrageous, but Paul took it seriously. In Romans 6:1–2, he wrote:

“What shall we say then? Shall we continue in sin, that grace may abound? May it never be! We who died to sin, how can we live in it any longer?” (UASV)

Paul’s answer was clear: real Christians don’t think like that. If we’ve truly put our trust in Christ, then we’ve died to sin. That doesn’t mean we never struggle or stumble, but it does mean we don’t want to live in rebellion against God anymore.

The person who thinks grace gives him a license to sin hasn’t understood the gospel at all.

Faith changes a person. It leads to repentance. It leads to a desire to obey God. Not to earn His love, but because of it.

Let’s be very clear here: the good works that follow faith are necessary—not to earn salvation, but to show that salvation is real. They are the evidence of a living faith.

James made this point in his letter. In James 2:17, he says:

“Even so faith, if it has no works, is dead in itself.” (UASV)

Some people think James and Paul contradict each other. Paul says we are justified by faith apart from works. James says faith without works is dead.

But they’re actually fighting different enemies. Paul is warning against legalism—trusting in your own obedience. James is warning against fake faith—claiming to believe but showing no change in your life.

Both apostles would agree that true faith produces action. If someone says, “I believe,” but keeps on living in sin without repentance or growth, that person doesn’t have saving faith. He may believe facts in his head, but he hasn’t trusted Christ with his heart.

So, real faith includes knowledge, trust, and commitment. It involves the whole person—mind, heart, and will.

Faith isn’t just believing that Jesus lived or that the Bible is true. The demons believe those things (James 2:19). Saving faith goes beyond that. It rests in Christ personally. It says, “I am a sinner, and I trust Jesus alone to save me.”

This kind of faith always leads to a new life. It produces fruit. It brings about love, humility, service, and obedience—not perfectly, but increasingly.

Here’s a helpful example: Imagine two men trapped in a burning building. A firefighter arrives and tells them to follow him if they want to live. One man hesitates. He says he believes the firefighter is trustworthy, but he stays put. The other man runs after the firefighter and escapes.

Which man had real faith?

Clearly, the one who followed. The first man may have believed facts about the rescuer, but he didn’t act on them. He didn’t entrust himself.

That’s the difference between dead faith and living faith. Real faith takes action—not to earn rescue, but because it trusts the rescuer.

This is how salvation works. We’re not saved because we obey—we’re saved because we trust the only One who can save. But once we trust Him, we follow Him. That’s the pattern of true faith.

We’ve seen that real faith changes lives. It doesn’t leave a person the same. But that change isn’t what saves you. It’s the result of being saved.

Here’s the key: Faith looks away from self and looks to Christ.

A lot of people miss this. They think they need to work on their faith before they can come to Christ. They say things like, “I don’t feel spiritual enough,” or, “I need to clean up my life first.” But this turns faith into a kind of work—and that’s exactly what Paul warns against.

Faith isn’t something we build up by our own effort. It’s not about feeling strong or having deep emotions. It’s about resting in what Jesus has done.

THE EVANGELISM HANDBOOK

Isaiah 45:22 says:

“Look to me, and be saved, all the ends of the earth; for I am God, and there is no other.” (UASV)

That’s what faith does. It looks. It receives. It trusts.

This is what brings peace to the soul. When we stop trying to earn God’s favor and start trusting in Christ alone, we finally experience true rest.

Jesus said:

“Come to me, all you who labor and are heavy laden, and I will give you rest” (Matthew 11:28, UASV).

That rest comes by faith—not by striving to be good enough. And it leads to joy and thanksgiving. When you know you’ve been freely forgiven, you love much. You want to obey—not out of fear, but out of gratitude.

This is the beauty of the gospel. It produces the very things that the law demanded—love, holiness, humility—but it does so by grace, not by pressure.

That’s why Paul says in Galatians 5:6:

“For in Christ Jesus neither circumcision avails anything, nor uncircumcision; but faith working through love.” (UASV)

Faith produces love. And love leads to obedience. That’s the order. Get it backwards, and you lose the gospel.

Some people worry that if we emphasize faith too much, we’ll end up with lazy Christians who don’t care about obedience. But the opposite is true. When people try to earn their way to God, they either become proud or discouraged. But when they see that Christ has done it all, their hearts are filled with joy, and that joy gives them strength to live for God.

In John 15:5, Jesus said:

“I am the vine, you are the branches. He who remains in me, and I in him, the same bears much fruit: for apart from me you can do nothing.” (UASV)

Faith connects us to Christ. And through that connection, our lives begin to bear fruit.

So let’s never forget the main point: we are justified—made right with God—by faith alone, not by our works. But the faith that justifies is never alone. It always leads to a changed life.

We don’t trust in our good deeds, but we also don’t ignore them. They are the natural result of a heart that has been touched by grace.

This is the Christian life: resting in Christ and walking in newness of life.

May God help us to cling to the true gospel. May we never fall into the trap of legalism on one side or lawlessness on the other. And may our lives be living proof that faith in Jesus brings both salvation and transformation.

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About the Author

J. Gresham Machen (1881–1937) was a prominent American theologian and New Testament scholar, known for his staunch defense of orthodox Christianity against the rising tide of theological liberalism in the early 20th century. His works continue to be influential among conservative Christian scholars and lay readers alike.

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