The king of the children of Ammon answered to the messengers of Jephthah, Because Israel took away my land, when he came up out of Egypt, from the Arnon even to the Jabbok, and to the Jordan: now therefore restore those [lands] again peaceably.
This mistake could have been inadvertent or intentional and designed to denigrate the Ammonites. [Note: See Lindsey, p. 401, for three other possible interpretations.] King Balak of Moab had never fought with Israel (Numbers 22-24). This powerful king realized that opposing Israel in battle would be futile in view of the power of Israel’s God.