5 In Hebron he reigned over Judah seven years and six months; and in Jerusalem he reigned thirty-three years over all Israel and Judah.
2 Samuel 5:5 Cross References - WEB
2 Samuel 2:11
11 The time that David was king in Hebron over the house of Judah was seven years and six months.
1 Kings 2:11
11 The days that David reigned over Israel were forty years; he reigned seven years in Hebron, and he reigned thirty-three years in Jerusalem.
1 Chronicles 3:4
4 six were born to him in Hebron; and he reigned there seven years and six months. He reigned thirty-three years in Jerusalem;