1 Chronicles 16:39

³⁷And they left there Asaph and his brethren before the ark of the covenant of the Lord, to minister before the ark continually, according to the service of each day: from day to day.

³⁸And Obed-edom and his brethren were sixty and eight; and Obed-edom the son of Jeduthun, and Hosah, were to be doorkeepers.

— 1 Chronicles 16:39 —

⁴⁰to offer up whole burnt offerings to the Lord on the altar of whole burnt offerings continually morning and evening, and according to all things written in the law of the Lord, which he commanded the children of Israel by Moses the servant of God.

⁴¹And with him were Heman and Jeduthun, and the rest chosen out by name to praise the Lord, for his mercy endures forever.