Tertullian, by whom this system was reduced to order and commended to the higher class of minds, did indeed maintain that the rule of faith was fixed and immutable; but nevertheless that there was need of a continued supernatural revelation of truth, at least as to matters of duty and discipline. This supernatural revelation was made through the Paraclete; whether, as was perhaps the general idea among the Montanists, by communications granted, from time to time, to special individuals, who thereby