This man of wickedness spoke the very words of the living God under a legitimate call and command. Woe betide King Balak of Moab should he refuse to listen!!
The canon of scripture is closed. I do not believe it possible for new "words of God" to be spoken because it seems to be the case that God wills to be silent. That being said, there is such a thing as wisdom and truth, to which God in his grace appoints certain men to have a share in. They can even be godless men; atheists, libertines, Adolf Hitlers, jews, pagans, homosexuals etc... God has given them wisdom to speak. It would be an error to make of this a principle; such would be the turning of godlessness into a call or an office. Yet woe betide those who are proffered wisdom from such as these and spurn it.