וַיֹּ֣אמֶר ל֔וֹ כֹּ֖ה אָמַ֣ר יִפְתָּ֑ח לֹֽא־לָקַ֤ח יִשְׂרָאֵל֙ אֶת־אֶ֣רֶץ מוֹאָ֔ב וְאֶת־אֶ֖רֶץ בְּנֵ֥י עַמּֽוֹן׃
and he said unto him: ‘Thus saith Jephthah: Israel took not away the land of Moab, nor the land of the children of Ammon.
Read Midrashic interpretations of Judges 11:15: rabbinic exegesis from Bereshit Rabbah, Shemot Rabbah and classical Midrash sources, free.