וַיִּתְּנוּ־לוֹ֙ שִׁבְעִ֣ים כֶּ֔סֶף מִבֵּ֖יתּ בַ֣עַל בְּרִ֑ית וַיִּשְׂכֹּ֨ר בָּהֶ֜ם אֲבִימֶ֗לֶךְ אֲנָשִׁ֤ים רֵיקִים֙ וּפֹ֣חֲזִ֔ים וַיֵּלְכ֖וּ אַחֲרָֽיו׃
And they gave him threescore and ten pieces of silver out of the house of Baal-berith, wherewith Abimelech hired vain and light fellows, who followed him.
Read midrashic interpretation of Judges 9:4: and classical rabbinic exegesis.