1 Chronicles 18:14 adds that David reigned with justice and equity, expanding on the fact that he reigned over all Israel.

1 Kings 2:11 states David's reign length, providing the duration that complements his reign over all Israel.

Psalm 78:71 recalls God bringing David from shepherding to rule Israel, providing the backstory to his reign.

Psalm 78:72 describes David's integrity and skill as a shepherd-ruler, complementing the statement of his reign.