(13) Because Israel took away my land.--This was a very plausible plea, but was not in accordance with facts. The Israelites had been distinctly forbidden to war against the Moabites and Ammonites (Deuteronomy 2:9; Deuteronomy 2:19); but when Sibon, king of the Amorites, had refused them permission to pass peaceably through his land, and had even come out to battle against them, they had defeated him and seized his territory. It was quite true that a large district in this territory had originally belonged to Moab and Ammon, and had been wrested from them by Sihon (Numbers 21:21-30; Joshua 12:2; Joshua 12:5); but that was a question with which the Israelites had nothing to do, and it was absurd to expect that they would shed their blood to win settlements for the sole purpose of restoring them to nations which regarded them with the deadliest enmity.

From Arnon even unto Jabbok.--The space occupied by Gad and Reuben. The Arnon ("noisy" ) is now the Wady Modjeb. It was the southern boundary of Reuben, and its deep rocky ravine separated that tribe from Moab. The Jabbok ("pouring out") was originally the "border of the children of Ammon" (Deuteronomy 3:16; Numbers 21:24). It is nearly midway between the Dead Sea and the Sea of Galilee, and is now called the Wady Zurka.

Verse 13. - And the king, etc. The Ammonite king stated his ground of quarrel very distinctly. He claimed the land between the Amen and the Jabbok as Ammonitish or Moabitish territory, and demanded its surrender as the only condition of peace. It appears from Joshua 13:25 that part of the land of the tribe of Gad, that, namely, "on the western side of the upper Jabbok," had once belonged to the Ammonites, but had been conquered by the Amorites, from whom Israel took it, together with that which had formerly belonged to the Moabites.

11:12-28 One instance of the honour and respect we owe to God, as our God, is, rightly to employ what he gives us to possess. Receive it from him, use it for him, and part with it when he calls for it. The whole of this message shows that Jephthah was well acquainted with the books of Moses. His argument was clear, and his demand reasonable. Those who possess the most courageous faith, will be the most disposed for peace, and the readiest to make advances to obtain; but rapacity and ambition often cloak their designs under a plea of equity, and render peaceful endeavours of no avail.And the king of the children of Ammon answered unto the messengers of Jephthah,.... Who this king of Ammon was is not said, however he returned an answer to Jephthah's messengers, which they brought to him, and it was to this purpose; that the reason of his invading the land, and bringing war into it, was:

because Israel took away my land when they came out of Egypt; not as soon as they came out of Egypt, for it was thirty nine years afterwards, and upwards, even a little before they entered into the land of Canaan; and the land they took was not theirs, but in the possession of Sihon and Og, kings of the Amorites; though indeed, before their conquest of it, it had been in the hands of the Moabites and Ammonites, and who being confederates, or subjects of the same king, is here claimed by the king of the children of Ammon:

from Arnon even unto Jabbok, and unto Jordan; the river Arnon was the border between Moab and the Amorites, and the river Jabbok was the border of the children of Ammon, Numbers 21:13, the one was to the south of the country claimed, and the other to the north and to the west, which was Jordan, and the wilderness to the east, Judges 11:22,

now therefore restore these lands again peaceably; this is demanded or proposed as terms or conditions of peace, and what would prevent a war, and nothing short of this would do it.