Judges 9:22-25

22When Abimelech had reigned three years over Israel, 23Then God sent an evil spirit between Abimelech and the men of Shechem; and the men of Shechem dealt treacherously with Abimelech: 24That the cruelty done to the seventy sons of Jerubbaal might come, and their blood be laid upon Abimelech their brother, who slew them; and upon the men of Shechem, who aided him in the killing of his brethren.1 25And the men of Shechem set an ambush for him on the top of the mountains, and they robbed all that came along that way by them: and it was told Abimelech.