Judges 9:23-25

23God sent an evil spirit between Abimelech and the lords of Shechem. So the men of Shechem dealt treacherously with Abimelech—

24in order that the violence done to Jerubbaal’s 70 sons might come due, so their blood might be laid on their brother Abimelech who slew them, and on the lords of Shechem who strengthened his hands to slay his brothers.

25So the lords of Shechem set up ambushers on the tops of the mountains, and they robbed anyone who passed by them along that road. So it was reported to Abimelech.