וַיָּ֨קָם בָּלָ֤ק בֶּן־צִפּוֹר֙ מֶ֣לֶךְ מוֹאָ֔ב וַיִּלָּ֖חֶם בְּיִשְׂרָאֵ֑ל וַיִּשְׁלַ֗ח וַיִּקְרָ֛א לְבִלְעָ֥ם בֶּן־בְּע֖וֹר לְקַלֵּ֥ל אֶתְכֶֽם׃
Then Balak the son of Zippor, king of Moab, arose and fought against Israel; and he sent and called Balaam the son of Beor to curse you.
Read halakhic rulings (Jewish law) on Joshua 24:9: and classical halakhic sources.