Then the prophet Gad said to David, Do not remain in the stronghold; leave, and get into the land of Judah. So David left and went into the forest of Hareth.
(Formerly in Israel, when a man went to inquire of God, he said, Come, let us go to the seer, for he that is now called a prophet was formerly called a seer.)
All these were the sons of Heman the king's seer [his mediator] in the words and things of God to exalt Him; for God gave to Heman fourteen sons and three daughters, [Ps. 68:25.]
Hezekiah stationed the Levites in the Lord's house with cymbals, harps, and lyres, as David [his forefather] and Gad the king's seer and Nathan the prophet had commanded; for the commandment was from the Lord through His prophets.