And the prophet Gad said unto David, Abide not in the hold; depart, and get thee into the land of Judah. Then David departed, and came into the forest of Hereth.
Now the acts of David the king, first and last, behold, they are written in the history of Samuel the seer, and in the history of Nathan the prophet, and in the history of Gad the seer;
And he set the Levites in the house of the LORD with cymbals with psalteries, 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.