8 Bible Verses about Apostate Believers

Brothers and sisters, if a person is discovered in some sin, you who are spiritual restore such a person in a spirit of gentleness. Pay close attention to yourselves, so that you are not tempted too.

When you gather together in the name of our Lord Jesus, and I am with you in spirit, along with the power of our Lord Jesus, turn this man over to Satan for the destruction of the flesh, so that his spirit may be saved in the day of the Lord.

My brothers and sisters, if anyone among you wanders from the truth and someone turns him back, he should know that the one who turns a sinner back from his wandering path will save that person's soul from death and will cover a multitude of sins.

If anyone sees his fellow Christian committing a sin not resulting in death, he should ask, and God will grant life to the person who commits a sin not resulting in death. There is a sin resulting in death. I do not say that he should ask about that. All unrighteousness is sin, but there is sin not resulting in death.

he should know that the one who turns a sinner back from his wandering path will save that person's soul from death and will cover a multitude of sins.

For it is impossible in the case of those who have once been enlightened, tasted the heavenly gift, become partakers of the Holy Spirit, tasted the good word of God and the miracles of the coming age, and then have committed apostasy, to renew them again to repentance, since they are crucifying the Son of God for themselves all over again and holding him up to contempt.read more.
For the ground that has soaked up the rain that frequently falls on it and yields useful vegetation for those who tend it receives a blessing from God. But if it produces thorns and thistles, it is useless and about to be cursed; its fate is to be burned.

For if we deliberately keep on sinning after receiving the knowledge of the truth, no further sacrifice for sins is left for us, but only a certain fearful expectation of judgment and a fury of fire that will consume God's enemies. Someone who rejected the law of Moses was put to death without mercy on the testimony of two or three witnesses.read more.
How much greater punishment do you think that person deserves who has contempt for the Son of God, and profanes the blood of the covenant that made him holy, and insults the Spirit of grace?

So because you are lukewarm, and neither hot nor cold, I am going to vomit you out of my mouth!