Don't get upset right away or alarmed when someone claims that we said through some spirit, conversation, or letter that the day of the Lord has already come.
Don't let anyone deceive you about this in any way. [That day cannot come unless] a revolt takes place first, and the man of sin, the man of destruction, is revealed.
He opposes every so-called god or anything that is worshiped and places himself above them, sitting in God's temple and claiming to be God.
Don't you remember that I told you about these things when I was still with you?
You know what it is that now holds him back, so that he will be revealed when his time comes.
The mystery of this sin is already at work. But it cannot work effectively until the person now holding it back gets out of the way.
Then the man of sin will be revealed and the Lord Jesus will destroy him by what he says. When the Lord Jesus comes, his appearance will put an end to this man.
The man of sin will come with the power of Satan. He will use every kind of power, including miraculous and wonderful signs. But they will be lies.
He will use everything that God disapproves of to deceive those who are dying, those who refused to love the truth that would save them.
That's why God will send them a powerful delusion so that they will believe a lie.
Then everyone who did not believe the truth, but was delighted with what God disapproves of, will be condemned.