Seek the Lord and the strength he gives! Seek his presence ¹  continually!

and the priests Benaiah and Jahaziel were to blow trumpets regularly before the ark of God’s covenant.

David ¹  left Asaph and his colleagues there before the ark of the Lord’s covenant to serve before the ark regularly and fulfill each day’s requirements, ² 

regularly offering burnt sacrifices to the Lord on the altar for burnt sacrifice, morning and evening, according to what is prescribed in the law of the Lord which he charged Israel to observe. ¹ 

and whenever burnt sacrifices were offered to the Lord on the Sabbath and at new moon festivals and assemblies. A designated number were to serve before the Lord regularly in accordance with regulations. ¹