Prophecy Without Permission

Prophets should avoid low-level prophetic utterance and seek the safer high-levels of spiritual accuracy. Some prophets violate holy living and open themselves up to idolatry, merchandising and prophetic error.

Presumptuous prophets prophesy because they can, but should they? Does a prophet need permission to prophesy?

If one prophesies by faith alone is he or she in danger of tapping into a spirit of divination? If a prophet that has not been granted permission to prophesy and yet does, is he guilty of sin?