Man of Sin

The Man of Sin is a figure described in 2 Thessalonians 2:3–10 as the supreme eschatological opponent of God who must be revealed before the day of the LORD arrives. Paul describes him as "the son of perdition" who opposes and exalts himself above every so-called god or object of worship, so that he sits in the temple of God proclaiming himself to be God. He is currently restrained by a "restrainer" (katechon) whose identity is debated; when this restraint is removed, the lawless one will be revealed, only to be destroyed by the Lord Jesus at his coming by the breath of his mouth and the brightness of his appearing.

The identification of the Man of Sin has generated extensive discussion across the history of interpretation: proposals include the Roman Emperor (Caligula or Nero), a future individual Antichrist figure, a principle of lawlessness embodied in successive human institutions, or the papacy (in Reformation polemic). The connection to Daniel's "abomination of desolation" (Daniel 9:27; 11:31; 12:11; Matthew 24:15) and to the Beast of Revelation 13 and 17 suggests a common eschatological figure anticipated across multiple apocalyptic texts. The passage's emphasis is less on identifying the figure's historical referent than on the certainty of his ultimate defeat by Christ.