1 Chronicles 16:40-42

40to offer burnt-offerings unto Jehovah upon the altar of burnt-offering continually morning and evening, even according to all that is written in the law of Jehovah, which he commanded unto Israel; 41and with them Heman and Jeduthun, and the rest that were chosen, who were mentioned by name, to give thanks to Jehovah, because his lovingkindness endureth for ever; 42and with them Heman and Jeduthun with trumpets and cymbals for those that should sound aloud, and with instruments for the songs of God; and the sons of Jeduthun to be at the gate.