2 Thessalonians 2:3-8

3Let no one deceive you in any way, for it will not come until the rebellion occurs and the man of lawlessness—the son of destruction—is revealed. 4He will oppose and exalt himself above every so-called god or object of worship. So he will seat himself in the temple of God, proclaiming himself to be God.

5Do you not remember that I told you these things while I was still with you? 6And you know what is now restraining him, so that he may be revealed at the proper time. 7For the mystery of lawlessness is already at work, but the one who now restrains it will continue until he is taken out of the way. 8And then the lawless one will be revealed, whom the Lord Jesus will slay with the breath of His mouth and annihilate by the majesty of His arrival.