2 Thessalonians 2:5-8

Don’t you remember that I told you about all this when I was with you? And you know what is holding him back, for he can be revealed only when his time comes. For this lawlessness is already at work secretly, and it will remain secret until the one who is holding it back steps out of the way. Then the man of lawlessness will be revealed, but the Lord Jesus will slay him with the breath of his mouth and destroy him by the splendor of his coming.