'Apostasy' in the Bible

“Why then has this people, Jerusalem,Turned away in continual apostasy?They hold fast to deceit,They refuse to return.

I will heal their apostasy,I will love them freely,For My anger has turned away from them.

Let no one in any way deceive you, for it will not come unless the apostasy comes first, and the man of lawlessness is revealed, the son of destruction,