1 Chronicles 16:40-42

40To offer burnt offerings unto Yhwh upon the altar of the burnt offering continually morning and evening, and to do according to all that is written in the law of Yhwh, which he commanded Israel;1

41And with them Heman and Jeduthun, and the rest that were chosen, who were expressed by name, to give thanks to Yhwh, because his mercy endureth for ever;

42And with them Heman and Jeduthun with trumpets and cymbals for those that should make a sound, and with musical instruments of God. And the sons of Jeduthun were porters.2