2 Thessalonians 2:3, 10-12

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], [Dan 7:25; 8:25; 1 Tim 4:1]

and by unlimited seduction to evil and with all the deception of wickedness for those who are perishing, because they did not welcome the love of the truth [of the gospel] so as to be saved [they were spiritually blind, and rejected the truth that would have saved them]. Because of this God will send upon them a misleading influence, [an activity of error and deception] so they will believe the lie, in order that all may be judged and condemned who did not believe the truth [about their sin, and the need for salvation through Christ], but instead took pleasure in unrighteousness.