8 Bible Verses about Apostate Believers

Brethren, if anybody be detected in any misconduct, you who are spiritual should restore such a one in a spirit of meekness. And let each of you keep watch over himself, lest he also fall into temptation.

In the name of our Lord Jesus, when you are all assembled and my spirit is with you, together with the power of our Lord Jesus, I have handed over such a man to Satan for the destruction of his body, that his spirit may be saved on the day of the Lord Jesus.

My brethren, if one of you strays from the truth and some one brings him back, let him know that he who brings a sinner back from his evil ways will save the man's soul from death and throw a veil over a multitude of sins.

If any one sees a brother man committing a sin which is not unto death, he shall ask and God shall give him life--for those who do not sin unto death. There is such a thing as sin unto death; for that I do not bid him make request. Any kind of wrongdoing is sin; but there is sin which is not unto death.

let him know that he who brings a sinner back from his evil ways will save the man's soul from death and throw a veil over a multitude of sins.

For it is impossible, in the case of those who have once for all been enlightened, and have tasted the sweetness of the heavenly gift, and have been made partakers of the Holy Spirit, and have realized how good the word of God is and how mighty are the powers of the coming Age, and then fell away-- it is impossible, I say, to keep bringing them back to a new repentance, for, to their own undoing, they are repeatedly crucifying the Son of God afresh and exposing Him to open shame.read more.
For land which has drunk in the rain that often falls upon it, and brings forth vegetation useful to those for whose sakes, indeed, it is tilled, has a share in God's blessing. But if it only yields a mass of thorns and briers, it is considered worthless, and is in danger of being cursed, and in the end will be destroyed by fire.

For if we wilfully persist in sin after having received the full knowledge of the truth, there no longer remains in reserve any other sacrifice for sins. There remains nothing but a certain awful expectation of judgement, and the fury of a fire which before long will devour the enemies of the truth. Any one who bids defiance to the Law of Moses is put to death without mercy on the testimony of two or three witnesses.read more.
How much severer punishment, think you, will he be held to deserve who has trampled under foot the Son of God, has not regarded as holy that Covenant-blood with which he was set free from sin, and has insulted the Spirit from whom comes grace?

Accordingly, because you are lukewarm and neither hot nor cold, before long I will vomit you out of My mouth.