John Calvin's Commentary on the Bible - Jeremiah 49:1
Verse 1 We have said that the Ammonites were not only contiguous to the Moabites, but had also derived their origin from Lot, and were thus connected with them by blood. Their origin was indeed base and shameful, for they were, as it is well known, the offspring of incest. There was, however, the bond of fraternity between them, because both nations had the same father. God had spared them when he brought up his people from Egypt; for in remembrance of the holy man Lot, he would have both... read more
Adam Clarke's Commentary on the Bible - Jeremiah 49:6
Afterward I will bring again - The Ammonites are supposed to have returned with the Moabites and Israelites, on permission given by the edict of Cyrus. read more