2 Thessalonians 2:3-6

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.