2 Thessalonians 2:4-5

2:4 He opposes and exalts himself above every so-called god or object of worship, and as a result he takes his seat in God’s temple, displaying himself as God. 2:5 Surely you recall that I used to tell you these things while I was still with you.

2 Thessalonians 2:9-10

2:9 The arrival of the lawless one will be by Satan’s working with all kinds of miracles and signs and false wonders, 2:10 and with every kind of evil deception directed against those who are perishing, because they found no place in their hearts for the truth so as to be saved.