Cross reference
1 Kings 2:11
11 The days that David reigned over Israel were forty years; seven years reigned he in Hebron, and thirty-three years reigned he in Jerusalem.
2 Samuel 5:4-5
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-three years over all Israel and Judah.
1 Chronicles 29:26-27
26 Now David the son of Jesse reigned over all Israel.
27 The time that he reigned over Israel was forty years; he reigned seven years in Hebron, and thirty-three [years] reigned he in Jerusalem.