them and becoming acquainted with their doctrine, we thought it necessary to inform you, our dear friend, about these portentous and profound “mysteries” which not all grasp,16 because not all have purged their brains.17 Thus, having learned of these mysteries yourself, you can make them clear to all your people and warn them to be on guard against this profundity of nonsense and of blasphemy against God.18 To the best of our ability we will give you a concise and clear report on the doctrine of