'Apostasy' in the Bible

For the scepter of wickedness shall not rest on the land of the righteous,So that the righteous will not reach out their hands to do wrong.

Let no one in any way deceive or entrap you, for that day will not come unless the apostasy comes first [that is, the great rebellion, the abandonment of the faith by professed Christians], and the man of lawlessness is revealed, the son of destruction [the Antichrist, the one who is destined to be destroyed],