Judges 9:5

9:5 He went to his father’s home in Ophrah and murdered his half-brothers, the seventy legitimate sons of Jerub-Baal, on one stone. Only Jotham, Jerub-Baal’s youngest son, escaped, because he hid.

Judges 9:53-57

9:53 a woman threw an upper millstone down on his head and shattered his skull. 9:54 He quickly called to the young man who carried his weapons, “Draw your sword and kill me, so they will not say, ‘A woman killed him.’” So the young man stabbed him and he died. 9:55 When the Israelites saw that Abimelech was dead, they went home.

9:56 God repaid Abimelech for the evil he did to his father by murdering his seventy half-brothers. 9:57 God also repaid the men of Shechem for their evil deeds. The curse spoken by Jotham son of Jerub-Baal fell on them.