Therefore the anger of Yahweh was kindled against Israel, and he sold them into the hand of Cushan Rishathaim king of Mesopotamia: and the children of Israel served Cushan Rishathaim eight years.
He had forty sons and thirty sons' sons, who rode on seventy donkey colts: and he judged Israel eight years.
2 Kings 8:17
He was thirty-two years old when he began to reign. He reigned eight years in Jerusalem.
There he found a certain man named Aeneas, who had been bedridden for eight years, because he was paralyzed.
2 Kings 17:1
In the twelfth year of Ahaz king of Judah began Hoshea the son of Elah to reign in Samaria over Israel, [and reigned] nine years.