2 Samuel 5:3-5

New Revised Standard Version, Anglicised Catholic Edition

³ So all the elders of Israel came to the king at Hebron; and King David made a covenant with them at Hebron before the Lord, and they anointed David king over Israel. ⁴ David was thirty years old when he began to reign, and he reigned for forty years. ⁵ At Hebron he reigned over Judah for seven years and six months; and at Jerusalem he reigned over all Israel and Judah for thirty-three years.