John Chrysostom

"Repent therefore of this thy wickedness and pray God, if perhaps the thought of thine heart may be forgiven thee. For I perceive the bond of iniquity." Once more he brings to light what was in the thoughts, because Simon thought to escape detection. "If perchance it may be forgiven thee." Not as though it would not have been pardoned, had he wept, but this is the manner of the Prophet also, to denounce absolutely, and not to say, "Howbeit, if thou do this, thy sin shall be forgiven," but that in any wise the punishment shall take effect.

For had it been done with simplicity, he would have even welcomed his willing mind. Seest thou that to have mean conceptions of great things is to sin doubly? Accordingly, two things he bids him: "Repent and pray, if haply the thought of thine heart may be forgiven thee." Seest thou it was a wicked thought he had entertained? Therefore he says, "If haply it may be forgiven thee": because he knew him to be incorrigible. "For I perceive that thou art in the gall of bitterness, and in the bond of iniquity." Words of exceeding wrath!

But otherwise he did not punish him: that faith may not thereafter be of compulsion; that the matter may not seem to be carried ruthlessly; that he may introduce the subject of repentance: or also, because it suffices for correction to have convicted him, to have told him what was in his heart, to have brought him to confess himself overcome.