1 Chronicles 3:4 records the same seven years in Hebron and thirty-three in Jerusalem, confirming the reign length.

1 Chronicles 26:31 notes an event in David's fortieth year, the same period referenced by the reign length here.

2 Samuel 5:4-5 adds David's age and six-month precision to the forty-year reign, expanding on the duration.

2 Samuel 5:5 gives the same forty-year reign total with the same division between Hebron and Jerusalem — a direct parallel account.

1 Kings 2:11 repeats the identical forty-year reign summary for David, confirming the historical record.

2 Samuel 2:11 records David's seven-and-a-half-year reign in Hebron, matching the first part of the forty-year total here.

1 Kings 1:1 describes David's old age at the close of his forty-year reign, providing the narrative context for his death.