Bible Verses About Prophets: One generally attached to the king's household

When David rose up in the morning, the LORD’s word came to the prophet Gad, David’s seer, saying,

He set the Levites in the LORD’s house with cymbals, with stringed instruments, and with harps, according to the commandment of David, and of Gad the king’s seer, and Nathan the prophet; for the commandment was of the LORD by his prophets.

The singers the sons of Asaph were in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king’s seer; and the porters were at every gate: they didn’t need to depart from their service; for their brothers the Levites prepared for them.