Dionysius of Alexandria

And when a certain brother of the order of presbyters sought to deter me, and feared lest I should be involved in the same wicked filthiness, because he said that my mind would be contaminated, and indeed with truth, as I myself perceived, I was strengthened by a vision that was sent me from God. And a word spoken to me, expressly commanded me, saying, Read everything which shall come into thy hands, for thou art fit to do so, who correctest and provest each one; and from them to thee first of all has appeared the cause and the occasion of believing. I received this vision as being what was in accordance with the apostolic word, which thus urges all who are endowed with greater virtue, "Be ye skilful money-changers."