Now the prophet Gad said to David, “Do not stay in the stronghold; depart, and go to the land of Judah.” So David departed and went into the forest of Hereth.
And he stationed the Levites in the house of the Lord with cymbals, with stringed instruments, and with harps, according to the commandment of David, of Gad the king’s seer, and of Nathan the prophet; for thus was the commandment of the Lord by His prophets.
Now the acts of King David, first and last, indeed they are written in the book of Samuel the seer, in the book of Nathan the prophet, and in the book of Gad the seer,