Bible Verses About apostates

And Ahab the son of Omri did evil in the sight of the LORD above all that were before him.

They on the rock are they, which, when they hear, receive the word with joy; and these have no root, which for a while believe, and in time of temptation fall away.

But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.

Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;

Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.

Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;

If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed: