2 Samuel 5:3-5
3 So all the elders of Israel came to the king at Hebron. King David made a covenant with them(A) at Hebron in the Lord’s presence, and they anointed David king over Israel.
4 David was 30 years old when he began his reign;(B) he reigned 40 years.
5 In Hebron he reigned over Judah seven years and six months, and in Jerusalem he reigned 33 years over all Israel and Judah.