'Servant of the Lord' in the Bible

So Solomon, and all the congregation with him, went to the high place that was at Gibeon; for there was the tabernacle of meeting of God, which Moses the servant of the LORD had made in the wilderness.

And the king called for Jehoiada the chief, and said unto him, Why have you not required of the Levites to bring in out of Judah and out of Jerusalem the collection, according to the commandment of Moses the servant of the LORD, and of the congregation of Israel, for the tabernacle of witness?