1 Chronicles 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: 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:
The verse belongs to the account of bringing the ark of God to Jerusalem and the events connected with it. David brought the ark from Kirjath-jearim to Jerusalem and placed it in the tent he had prepared for it. After placing the ark in Jerusalem, he left Asaph and his fellow Levites to minister continually before it, performing each day's work as required.
Regular worship included continual service before the ark together with daily offerings and other required duties, so the verse exemplifies the stated daily service of the sanctuary. The continual ministry before the ark was carried out each day as required. The verse shows continual service rendered by God's servants before Him. The word continually denotes what is permanent in worship, not merely a single daily ritual. Such service expresses the constant, living union between God and His people through their faithful service and His care.
This daily temple service belongs to the continual service whose essential meaning is worship made acceptable through Christ. This continual service was a figure fulfilled in Christ as the enduring Priest whose one sacrifice continues to provide salvation. The verse is parallel with Psalm 105 and connects keeping God's commandments with a thousand generations.