8 Bible Verses about Apostate Believers

Brothers, if someone is caught in any kind of wrongdoing, those of you who are spiritual should set him right. But you must do it in a gentle way. And keep an eye on yourselves, so that you will not be tempted, too.

When you assemble in the name and with the power of our Lord Jesus Christ, I will be with you in spirit. Deliver this one to Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.

My brothers, if any among you strays from the truth, and one brings him back, let him know, that he who turns a sinner back from the error of his way will save a person from death, and cover a multitude of sins.

If any man see his brother committing a sin not leading to death, he will ask, and God will give him life for them that sin not leading to death. There is a sin that leads to death. I do not say that he should make request concerning this. All unrighteousness is sin: and there is a sin not leading to death.

let him know, that he who turns a sinner back from the error of his way will save a person from death, and cover a multitude of sins.

Those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Spirit, and have tasted the good Word of God, and the powers of the age to come, if they shall fall away, it is impossible to renew them again to repentance. This is because they personally impale the Son of God again, and expose him to public shame.read more.
The earth that drinks in the rain that comes upon it, and brings forth vegetation for those by whom it was cultivated, receives blessing from God. That which bears thorns and briars is rejected, and is near to being cursed. It ends up being burned.

If we continue to (practice) (deliberately persist in) sin willfully after we have received the knowledge of the truth, there remains no more sacrifice for sins. But there remains a certain fearful expectation of judgment and a fiery indignation, which will devour God's enemies. He that despised Moses' Law died without mercy under two or three witnesses.read more.
What about those who despise the Son of God? Those who treat as a cheap thing the blood of God's covenant that purified them from sin? Those who insult the Spirit of grace? Think how much worse the punishment they deserve will be!

Because you are lukewarm, and neither hot nor cold, I will spit you out of my mouth.