Whether prophets always know the things which they prophesy?

❌ Objection 1 : It would seem that the prophets always know the things which they prophesy. For, as Augustine says (Gen. ad lit. xii, 9), "those to whom signs were shown in spirit by means of the likenesses of bodily things, had not the gift of prophecy, unless the mind was brought into action, so that those signs were also understood by them." Now what is understood cannot be unknown. Therefore the prophet is not ignorant of what he prophesies.

❌ Objection 2 : Further, the light of prophecy surpasses the light of natural reason. Now one who possesses a science by his natural light, is not ignorant of his scientific acquirements. Therefore he who utters things by the prophetic light cannot ignore them.

❌ Objection 3 : Further, prophecy is directed for man's enlightenment; wherefore it is written (2 Pt. 1:19): "We have the more firm prophetical word, whereunto you do well to attend, as to a light that shineth in a dark place." Now nothing can enlighten others unless it be lightsome in itself. Therefore it would seem that the prophet is first enlightened so as to know what he declares to others.