'Man of God' in the Bible

And the leaders of the Levites were Hashabiah, Sherebiah, Jeshua son of Kadmiel, and their colleagues, who stood opposite them to offer praise and thanks, one contingent corresponding to the other, as specified by David the man of God.

and his colleagues -- Shemaiah, Azarel, Milalai, Gilalai, Maai, Nethanel, Judah, and Hanani -- with musical instruments of David the man of God. (Ezra the scribe led them.)