3. (Jer 49:1).
      when . . . profaned; . . . when . . . desolate; . . . when . . . captivity--rather, "for . . . for . . . for": the cause of the insolent exultation of Ammon over Jerusalem. They triumphed especially over the fall of the "sanctuary," as the triumph of heathenism over the rival claims of Jehovah. In Jehoshaphat's time, when the eighty-third Psalm was written (Ps 83:4, 7, 8, 12, "Ammon . . . holpen the children of Lot," who were, therefore, the leaders of the unholy conspiracy, "Let us take to ourselves the houses of God in possession"), we see the same profane spirit. Now at last their wicked wish seems accomplished in the fall of Jerusalem. Ammon, descended from Lot, held the region east of Jordan, separated from the Amorites on the north by the river Jabbok, and from Moab on the south by the Arnon. They were auxiliaries to Babylon in the destruction of Jerusalem (2Ki 24:2).

JFB.