1. This gracious declaration of God's readiness to pardon sin comes in very strangely. The charge ran very high: Thou hast wearied me with thy iniquities, v. 24. Now one would think it would follow: "I, even I, am he that will destroy thee, and burden myself no longer with care about thee." No, I, even I, am he that will forgive thee; as if the great God would teach us that forgiving injuries is the best way to make ourselves easy and to keep ourselves from being wearied with them. This comes in here to encourage them to repent, because there is forgiveness with God, and to show the freeness of divine mercy; where sin has been exceedingly sinful grace appears exceedingly gracious. Apply this, (1.) To the forgiving of the sins of Israel as a people, in their national capacity. When God stopped the course of threatening judgments, and saved them from utter ruin, even then when he had them under severe rebukes, then he might be said to blot out their transgressions. Though he corrected them, he was reconciled to them again, and did not cut them off from being a people. This he did many a time, till they rejected Christ and his gospel, which was a sin against the remedy, and then he would forgive them no more as a nation, but utterly destroyed them. (2.) To the forgiving of the sins of every particular believing penitent—transgressions and sins, infirmities though ever so numerous, backslidings though ever so heinous. Observe here, [1.] How the pardon is expressed; he will blot them out, as a cloud is blotted out by the beams of the sun (ch. xliv. 22), as a debt is blotted out not to appear against the debtor (the book is crossed as if the debt were paid, because it is pardoned upon the payment which the surety has made), or as a sentence is blotted out when it is reversed, as the curse was blotted out with the waters of jealousy, which made it of no effect to the innocent, Num. v. 23. He will not remember the sin, which intimates not only that he will remit the punishment of what is past, but that it shall be no diminution to his love for the future. When God forgives he forgets. [2.] What is the ground and reason of the pardon. It is not for the sake of any thing in us, but for his own sake, for his mercies'-sake, his promise-sake, and especially for his Son's sake, and that he may himself be glorified in it. [3.] How God glories in it: I, even I, am he. He glories in it as his prerogative. None can forgive sin but God only, and he will do it; it is his settled resolution. He will do it willingly and with delight; it is his pleasure; it is his honour; so he is pleased to reckon it.