Judges 9:22-57

Abimelech ruled over Israel for three years and, though he was wicked, is considered to be the next judge. After that time, God caused a spirit of ill will to arise between the men of Shechem and Abimelech. The men of Shechem set ambushes for Abimelech and the men who had helped him kill his brothers. They robbed anyone who passed along that way. They also chose Gaal the son of Ebed to be their new ruler. They made wine, ate, drank and cursed Abimelech. Gaal, in the midst of the celebration, challenged Abimelech to gather an army and come out to meet him in battle.

When Abimelech did, he defeated the city and burned all the people who locked themselves in the tower for protection. Then, he fought against Thebez. When he approached their tower, a woman dropped an upper millstone on his head and crushed his skull. He had his armorbearer kill him with a sword so people would not say he had been killed by a woman. So, God repayed him for murdering his brothers (Ruth 9:22-57).