1 Kings 4:5
And Azariah the son of Nathan was over the officers: and Zabud the son of Nathan was principal officer, and the king’s friend:
Cross-reference
1 Kings 4:7
Historical context
1 Kings 4:7 describes the twelve governors; Azariah son of Nathan is their overseer from verse 5.
2 Samuel 16:16
Parallel
2 Samuel 16:16 also mentions a 'king's friend' (Hushai), showing this official court title existed under David as well as Solomon.
1 Chronicles 27:33
Parallel
1 Chronicles 27:33 explicitly names Hushai the Archite as 'the king's friend', confirming this role in David's administration.