'Service' in the Bible

We also placed ourselves under obligation to contribute yearly one third of a shekel for the service of the house of our God:

Now the overseer of the Levites in Jerusalem was Uzzi the son of Bani, the son of Hashabiah, the son of Mattaniah, the son of Mica, from the sons of Asaph, who were the singers for the service of the house of God.

Also Bakbukiah and Unni, their brothers, stood opposite them in their service divisions.

For they performed the worship of their God and the service of purification, together with the singers and the gatekeepers in accordance with the command of David and of his son Solomon.

I also discovered that the portions of the Levites had not been given them, so that the Levites and the singers who performed the service had gone away, each to his own field.