1. God will remember their sin against them: He has sworn by the excellency of Jacob (v. 7), by himself, for he can swear by no greater; and who but he is the glory and magnificence of Jacob? He has sworn by those tokens of his presence with them, and his favour to them, which they had profaned and abused, and had done what they could to make them detestable to him; for he is said (ch. vi. 8) to abhor the excellency of Jacob. He swears in his wrath, swears by his own name, that name which was so well known and was so great in Israel. He swears, Surely I will never forget any of their works, but upon all occasions they shall be remembered against them, for more is implied than is expressed. I will never forget them is as much as to say, I will never forgive them; and then it proclaims the case of these unjust unmerciful men to be miserable indeed, eternally miserable; woe, and a thousand woes, to that man that is cut off by an oath of God from all benefit by pardoning mercy; and those have reason to fear judgment without mercy that have shown no mercy.