'Ministering' in the Bible

and the firstlings of our sons, and of our cattle, as it is written in the law, and the firstlings of our herds and our flocks, to bring in to the house of our God, to the priests who are ministering in the house of our God.

For the Israelis and the descendants of Levi will bring the grain offering, the wine, and the oil into the chambers where the vessels of the sanctuary are, along with the ministering priests, the porters, and the singers. We will not neglect the Temple of our God."

On that day men were appointed over the storerooms for the contributions, first fruits, and tithes, to gather into them from the fields of the cities the portions prescribed by the law for the priests and the Levites, for the people of Judah took delight in the priests and Levites who were ministering.