The “man of God”…does not give fresh revelation himself, but rather is the man who has the compilation of that completed revelation in his hands. While he is not a prophet himself, he is the heir of the prophets. In other words, he is not limited by the cessation of the prophetic gift because, as it says here, he is “competent” or equipped for every good work. There is no task the minister will be called upon to perform that he is not equipped to perform through the Scriptures.
—Doug Wilson, A Ministerial Tool Chest, commenting on 2 Timothy 3:16