1. To give to God the glory of his pardoning mercy, v. 18. God having promised to bring back the captivity of his people, the prophet, on that occasion, admires pardoning mercy, as that which was at the bottom of it. As it was their sin that brought them into bondage, so it was God's pardoning their sin that brought them our of it; Ps. lxxxv. 1, 2, and Isa. xxxiii. 24; xxxviii. 17; lx. 1, 2. The pardon of sin is the foundation of all other covenant-mercies, Heb. viii. 12. This the prophet stands amazed at, while the surrounding nations stood amazed only at those deliverances which were but the fruits of this. Note, (1.) God's people, who are the remnant of his heritage, stand charged with many transgressions; being but a remnant, a very few, one would hope they should all be very good, but they are not so; God's children have their spots, and often offend their Father. (2.) The gracious God is ready to pass by and pardon the iniquity and transgression of his people, upon their repentance and return to him. God's people are a pardoned people, and to this they owe their all. When God pardons sin, he passes it by, does not punish it as justly he might, nor deal with the sinner according to the desert of it. (3.) Though God may for a time lay his own people under the tokens of his displeasure, yet he will not retain his anger for ever, but though he cause grief he will have compassion; he is not implacable; yet against those that are not of the remnant of his heritage, that are unpardoned, he will keep his anger for ever. (4.) The reasons why God pardons sin, and keeps not his anger for ever, are all taken from within himself; it is because he delights in mercy, and the salvation of sinners is what he has pleasure in, not their death and damnation. (5.) The glory of God in forgiving sin is, as in other things, matchless, and without compare. There is no God like unto him for this; no magistrate, no common person, forgives as God does. In this his thoughts and ways are infinitely above ours; in this he is God, and not man. (6.) All those that have experienced pardoning mercy cannot but admire that mercy; it is what we have reason to stand amazed at, if we know what it is. Has God forgiven us our transgressions? We may well say, Who is a God like unto thee? Our holy wonder at pardoning mercy will be a good evidence of our interest in it.