14 And who is this, and from what sort of working? Interpret to us, O Paul. Whose coming, he says, is after the working of Satan, with all power and signs and lying wonders; implying, that Satan has used him as an instrument, working in his own person through him; for knowing that his judgment shall now no longer have respite, he wages war no more by his ministers, as is his wont, but henceforth by himself more openly. And with all signs and lying wonders; for the father of falsehood will make a show of the works of falsehood, that the multitudes may think that they see a dead man raised, who is not raised, and lame men walking, and blind men seeing, when the cure has not been wrought.
Source: Catechetical Lectures (New Advent)