Samuel
Judges 11:22BSB·traditional attribution

seizing all the land from the Arnon to the Jabbok and from the wilderness to the Jordan.

Matthew Henry Presbyterian @wholebiblehenry

We have here the treaty between Jephthah, now judge of Israel, and the king of the Ammonites (who is not named), that the controversy between the two nations might, if possible, be accommodated without the effusion of blood. I. Jephthah, as one having authority, sent to the king of Ammon, who in this war was the aggressor, to demand his reasons for invading the land...

Commenting on Judges 11:12-28

John Gill Reformed Baptist @doctorgill

So now the Lord God of Israel hath dispossessed the Amorites from before his people Israel,.... It is his doing, and not the work of the Israelites; it is he that dispossessed the Amorites, and put the Israelites into the possession of their land, and therefore they enjoy it by a good tenure: and shouldest thou possess it?

Jamieson-Fausset-Brown Reformed @jfbcommentary

HIS EMBASSY TO THE KING OF AMMON. (Jdg. 11:12-28) Jephthah sent messengers unto the king of the children of Ammon--This first act in his judicial capacity reflects the highest credit on his character for prudence and moderation, justice and humanity.

Commenting on Judges 11:12-28