'Apostasy' in the Bible

and they are instructed concerning thee, that apostasy from Moses thou dost teach to all Jews among the nations, saying -- Not to circumcise the children, nor after the customs to walk;

Don’t let anyone deceive you in any way. For that day will not come unless the apostasy comes first and the man of lawlessness is revealed, the son of destruction.

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.