7 Bible Verses about Apostasy, Cause

Simon, Simon, behold, Satan sought you out, to sift you as wheat:

I know, that after my departure grievous wolves will rise up against you, not sparing the flock;

For the time will come when they will not endure healthy teaching; but according to their own lusts they will heap to themselves teachers itching as to their hearing;

Therefore there is a sabbatism left for the people of God. For the one having entered into his rest has ceased from his works, as God did from his own. Therefore let us hasten to enter into that rest, lest some one may fall by the same example of unbelief.

For Demas has left me, having loved the present age, and is gone into Thessalonica; Crescents into Galatia, Titus into Dalmatia.

And hearing these words, they were cut through their hearts and gnashed their teeth at him.

and they being disharmonious to one another, dispersed, Paul saying one word, that truly the Holy Ghost spoke through the prophet Isaiah to your fathers, saying, Go to this people, and say, By hearing ye shall hear, and may not understand; and seeing you shall see, and may not perceive: for the heart of this people is waxed gross, and they heard with their ears heavily, and closed their eyes; lest they may see with their eyes, and hear with their ears, and understand with their heart, and turn, and I shall heal them.