to minister before # 13_1CH_16_04 # And he appointed [certain] of the Levites to minister before the ark of the LORD, and to record, and to thank and praise the LORD God of Israel: 
to minister before # 13_1CH_16_37 # So he left there before the ark of the covenant of the LORD Asaph and his brethren, to minister before the ark continually, as every day's work required: