2 Samuel 2:11
And the time that David was king in Hebron over the house of Judah was seven years and six months.
1 Kings 2:11
And the days that David reigned over Israel were forty years; seven years reigned he in Hebron, and thirty and three years reigned he in Jerusalem.
2 Samuel 5:4-5
David was thirty years old when he began to reign, and he reigned forty years.
1 Chronicles 3:4
six were born unto him in Hebron; and there he reigned seven years and six months. And in Jerusalem he reigned thirty and three years;
1 Chronicles 29:27
And the time that he reigned over Israel was forty years; seven years reigned he in Hebron, and thirty and three years reigned he in Jerusalem.