7. To assure ourselves of the needfulness of these two phrases, adopted and employed as the best of safeguards against the heretical rabble of that day, I think it best to reply to the obstinate misbelief of our present heretics, and refute their vain and pestilent teaching by the witness of the evangelists and apostles. They flatter themselves that they can furnish a proof for each of their propositions; they have, in fact, appended to each some passages or other from holy Writ; passages so grossly misinterpreted as to ensnare none but the illiterate by the semblance of truth with which perverted ingenuity has masked their explanation.