'Minister' in the Bible

Then David said, “No one is to carry the ark of God except the Levites; for the Lord chose them to carry the ark of God and to minister to Him forever.”

He appointed some of the Levites to minister before the ark of the Lord and to profess [God’s name] and to thank and praise the Lord, the God of Israel:

So David left Asaph and his relatives there before the ark of the covenant of the Lord to minister before the ark continually, as each day’s work required;

The sons of Amram: Aaron and Moses. Aaron was set apart to consecrate him as most holy, he and his sons forever, to burn incense before the Lord, attend to His service, and to bless [worshipers] in His name forever.

To these divisions of the gatekeepers, the chief men, were given duties, like their relatives, to minister in the house of the Lord.