I. The sin of the Ammonites is here intimated; it is their reproach, v. 28. 1. The reproach they put upon themselves when they hearkened to their false prophets (for such it seems there were among them as well as among the Jews), who pretended to foretel their perpetual safety in the midst of the desolations that were made of the countries round about them: "They see vanity unto thee and divine a lie, v. 29. They flatter thee with promises of peace, and thou art such a fool as to suffer thyself to be imposed upon by them and to encourage them therein by giving credit to them." Note, Those that feed themselves with a self-conceit in the day of their prosperity prepare matter for a self-reproach in the day of their calamity. 2. The reproach they put upon the Israel of God, when they triumphed in their afflictions, and thereby added affliction to them, which was very barbarous and inhuman. Their divines, by puffing them up with a conceit that they were a better people than Israel, being spared when they were cut off, and with a confidence that their prosperity should always continue, made them so very haughty and insolent that they did even tread on the necks of the Israelites that were slain, slain by the wicked Chaldeans, who had commission to execute God's judgments upon them when their iniquity had an end, that is, when the measure of it was full. We shall meet with this again, ch. xxv. 3, &c. Note, Those are ripening apace for misery who trample upon the people of God in their distress, whereas they ought to tremble when judgment begins at the house of God.