1 Chronicles 16:37-40

So he left Asaph and his relatives there before the ark of the covenant of the LORD to minister before the ark continually, as every day’s work required; and Obed-edom with his 68 relatives; Obed-edom, also the son of Jeduthun, and Hosah as gatekeepers. He left Zadok the priest and his relatives the priests before the tabernacle of the LORD in the high place which was at Gibeon, to offer burnt offerings to the LORD on the altar of burnt offering continually morning and evening, even according to all that is written in the law of the LORD, which He commanded Israel.