Jeremiah
Jeremiah 49:1ESV·traditional attribution

Concerning the Ammonites. Thus says the LORD: “Has Israel no sons? Has he no heir? Why then has Milcom dispossessed Gad, and his people settled in its cities?

John Calvin Reformed @genevareformer

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.

Matthew Henry Presbyterian @wholebiblehenry

The Ammonites were next, both in kindred and neighbourhood, to the Moabites, and therefore are next set to the bar. Their country joined to that of the two tribes and a half, on the other side Jordan, and was but a bad neighbour; however, being a neighbour, they shall have a share in these circular predictions. 1.

Commenting on Jeremiah 49:1-6

John Gill Reformed Baptist @doctorgill

Concerning the Ammonites, thus saith the Lord,.... Or, "to the Ammonites" (u); or, "against" them (w); it will bear to be rendered either way, and all is true; for what is said by the Lord, as follows, is concerning them, their sins, and their punishment, and is directed to them, and is a threatening against them: hath Israel no sons? hath he no heir?