A prayerless Christian is a contradiction in terms. Just as a still-born child is a dead one, so a professing believer who does not pray is devoid of spiritual life. Prayer is the breath of the new nature in the holy one, as the Word of God is its food.
Let Your Lips Be Guided by Wisdom
Proverbs 14:3 Updated American Standard Version (UASV)
3 In the mouth of a fool is the rod of pride,
but the lips of the wise will preserve them.