16:37-43 The worship of God ought to be the work of every day. David put it into order. At Jerusalem, where the ark was, Asaph and his brethren were to minister before the ark continually, with songs of praise. No sacrifices were offered there, nor incense burnt, because the altars were not there; but David's prayers were directed as incense, and the lifting up of his hands as the evening sacrifice. So early did spiritual worship take place of ceremonial. Yet the ceremonial worship, being of Divine institution, must by no means be omitted; therefore at Gibeon, at the altars, the priests attended; for their work was to sacrifice and burn incense; and that they did continually, morning and evening, according to the law of Moses. As the ceremonies were types of the mediation of Christ, the observance of them was of great consequence. The attendance of his appointed ministers is right in itself, and encourages the people.And with them Heman and Jeduthun, with trumpets and cymbals,.... Or with them were the trumpets and cymbals, as Kimchi; or, as Piscator supplies it, with them he "left" the trumpets and cymbals:

for those that should make a sound; by striking upon them:

and with musical instruments of God; sacred ones, such as were devoted to his service, as psalteries and harps; the Syriac and Arabic versions carry the sense of the words quite differently, that these men did not sing with those musical instruments, but with a pleasant voice, and with pure and acceptable prayers, in humility and uprightness, glorified God:

and the sons of Jeduthun were porters; at the tabernacle in Gibeon.