'Minister' in the Bible

so that the priests could not remain standing to minister because of the cloud; for the glory and brilliance of the Lord filled the house of God.

But let no one enter the house (temple) of the Lord except the priests and the Levites who minister; they may enter, for they are holy. And let all the people carefully observe the law of the Lord.

And Hezekiah appointed the divisions of the priests, and the Levites by their divisions, each in accordance with his service, both the priests and Levites, for burnt offerings and for peace offerings, to minister and to give thanks and to praise in the gates of the camp of the Lord.