Judges 9:6

“Gideon had seventy sons of his own, for he had many wives.”

Context: Abimelek was one of Gideon's sons.

“God did this so that the crime done to the seventy sons of Jerub-Baal might come, and their blood be avenged on Abimelek their brother and on the citizens of Shechem who had helped him murder them.”

Fulfillment of the curse later in the chapter.

“She watched as the king stood by the pillar, as the custom was. The officers and trumpeters were beside the king, and all the people of the land were rejoicing and blowing trumpets. Then Athaliah tore her robes and called out, “Treason! Treason!””

Anointing of a King at a pillar

“After he went to his father’s house in Ophrah, he killed his seventy brothers, the sons of Jerub-Baal, on one stone. But Jotham, the youngest son of Jerub-Baal, escaped by hiding.”

Context: Explains how Abimelek became king.

“On hearing this, the entire tower of Shechem gathered in the stronghold of the temple of El-Berith. When Abimelek heard that they had assembled, he climbed Mount Zalmon with all his troops. He took an ax and cut off some branches, which he lifted to his shoulders. He ordered the troops with him, “Quick! Do what you have seen me do!” So all the troops cut branches and followed Abimelek. They piled them against the stronghold and set it on fire; so all the people of the tower of Shechem, about a thousand men and women, also died.”

Context: later in the chapter showing judgment