Theophylact of Ohrid, on 1John 4:3

“And every spirit that dissolveth Jesus, is not of God: and this is Antichrist, of whom you have heard that he cometh, and he is now already in the world.”

“The Apostle says that the antichrist is already in the world; of course, not in person, but in the person of false prophets, false apostles, and heretics who precede and prepare his coming. And the antichrist himself will be a man bearing Satan within himself, "exalting himself above all that is called God or that is worshipped" (2 Thess. 2:4). This is also why he will forbid the worship of idols (which is what the Apostle meant by "that which is worshipped"), and will present himself alone as God.”

Imported from an open dataset — not yet checked against the printed edition.