Thus says Yahweh: "For three transgressions of the children of Ammon, yes, for four, I will not turn away its punishment; Because they have ripped open the pregnant women of Gilead, That they may enlarge their border.
This happened when Tiglath-Pileser III invaded Ammon in 734 B.C., but Ammon’s final demise came when Nebuchadnezzar sacked Rabbah and took many of Ammon’s citizens captive to Babylon around 586 B.C. The last reference to them is the Ammonites’ defeat by Judas Maccabeus in the second century B.C. (1 Maccabees 5:6-7).