'Man of God' in the Bible

And the chief of the Levites were Hashabiah, Sherebiah; and Jeshua the son of Kadmiel, with their brothers next to them, to praise and to give thanks, according to the command of David the man of God, watch by watch.

and his brothers, Shemaiah, and Azareel, Milalai, Gilalai, Maai, Nethaneel, and Judah, Hanani, with the musical instruments of David the man of God, and with Ezra the scribe before them.