Judges 11:12-15, 32-33

And Jephthah sent messengers unto the king of the children of Ammon, saying, What hast thou to do with me, that thou art come against me to fight in my land? And the king of the children of Ammon answered unto the messengers of Jephthah, Because Israel took away my land, when they came up out of Egypt, from Arnon even unto Jabbok, and unto Jordan: now therefore restore those lands again peaceably. And Jephthah sent messengers again unto the king of the children of Ammon: and said unto him, Thus saith Jephthah, Israel took not away the land of Moab, nor the land of the children of Ammon

So Jephthah passed over unto the children of Ammon to fight against them; and the LORD delivered them into his hands. And he smote them from Aroer, even till thou come to Minnith, even twenty cities, and unto the plain of the vineyards, with a very great slaughter. Thus the children of Ammon were subdued before the children of Israel.