2 Thessalonians 2:2-4

Revised Geneva Translation

² to not waver suddenly in your mind or be troubled by spirit or word or letter which seems to come from us, as though the day of Christ were at hand.

³ Let no one deceive you in any way. For that Day shall not come unless an apostasy comes first and the man of sin is revealed - the Son of Perdition -

⁴ who is an adversary and exalts himself against all that is called God or that is worshipped; so that he sits as God, in the Temple of God, showing himself that he is God.