7 Bible Verses about Apostasy, Cause

The Lord said, "Simon, Simon, behold, Satan asked to have you, that he might sift you as wheat,

For I know that after my departure, vicious wolves will enter in among you, not sparing the flock.

For the time will come when they will not listen to the sound doctrine, but, having itching ears, will heap up for themselves teachers after their own lusts;

There remains therefore a Sabbath rest for the people of God. For he who has entered into his rest has himself also rested from his works, as God did from his. Let us therefore give diligence to enter into that rest, lest anyone fall after the same example of disobedience.

for Demas left me, having loved this present world, and went to Thessalonica; Crescens to Galatia, and Titus to Dalmatia.

Now when they heard these things, they were cut to the heart, and they gnashed at him with their teeth.

When they didn't agree among themselves, they departed after Paul had spoken one word, "The Holy Spirit spoke rightly through Isaiah, the prophet, to our fathers, saying, 'Go to this people, and say, in hearing, you will hear, but will in no way understand. In seeing, you will see, but will in no way perceive. For this people's heart has grown callous. Their ears are dull of hearing. Their eyes they have closed. Lest they should see with their eyes, hear with their ears, understand with their heart, and would turn again, and I would heal them.'