1 Chronicles 16:37-40

So he left there, before the ark of the covenant of Jehovah, Asaph and his brethren, to minister before the ark continually, as every day’s work required; and Obed-edom with their brethren, threescore and eight; Obed-edom also the son of Jeduthun and Hosah to be doorkeepers; and Zadok the priest, and his brethren the priests, before the tabernacle of Jehovah in the high place that was at Gibeon, to 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