Jeremiah 49:1 - Joseph Benson’s Commentary on the Old and New Testaments

Hath Israel no sons? Why then doth their king inherit Gad? Is there no posterity of Israel, that the king of the Ammonites hath taken possession of Gad, as if he had a right to it, and his people dwell in the cities of it? Instead of their king, here, Blaney reads Milcom, and Dr. Waterland and Houbigant Malkam, the idol of the Ammonites. “God sorely afflicted those parts of the kingdom of Israel that lay eastward of Jordan, first by Hazael, 2 Kings 10:33; afterward by Tiglath-pileser, chap. 2 Kings 15:29; and then delivered up the whole kingdom to be carried captive by Shalmaneser, chap. 17.; after which, it is probable, the Ammonites took occasion to possess themselves of Gad, that lay near their territories. But God's dispossessing the Israelites gave the Ammonites no right to invade their inheritance, (see Zephaniah 2:8,) especially as they had been so tender of the Ammonites' right as not to invade their possessions in their march toward the land of Canaan.” See Lowth, and Deuteronomy 4:19; 2 Chronicles 20:10. It is probable, as the king of Ammon had instigated Ishmael to kill Gedaliah, that the reason which induced Nebuchadnezzar to make war upon the Ammonites was to revenge that murder.