2 Samuel 5:3-5

King James Version

³ So all the elders of Israel came to the king to Hebron; and king David made a league with them in 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 forty years.

⁵ In Hebron he reigned over Judah seven years and six months: and in Jerusalem he reigned thirty and three years over all Israel and Judah.