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
The time that David reigned over Israel was forty years: he reigned seven years in Hebron and thirty-three years in Jerusalem.
2 Samuel 5:4-5
David was thirty years old when he became king, and he reigned forty years.
1 Chronicles 3:4
These six were born to David in Hebron; he reigned there seven years and six months, and in Jerusalem he reigned thirty-three years.
1 Chronicles 29:27
The time that he reigned over Israel was forty years; he reigned seven years in Hebron and thirty-three years in Jerusalem.