the continuity of succession in the church of Rome: “But as it would be a very long task to enumerate, in such a volume as this, the successions of all the churches; pointing out that tradition which the greatest and most ancient and universally known church of Rome—founded and constituted by the two most glorious Apostles Peter and Paul—derives from the Apostles, and that faith announced to all men, which through the succession of (her) Bishops has come down to us, we confound all those who in any way, whether through self-complacency or vain-glory, or blindness and perverse opinion, assemble otherwise than as behoveth them. For to this church, on account of more potent principality, it is necessary that every church, that is, those who are on every side faithful, resort, in which (church) ever, by those who are on every side, has been preserved that tradition which is from the Apostles.… By this order and by this succession both that tradition which is in the Church from the Apostles, and the preaching of the truth, have come down to us. And this is a most complete demonstration that the vivifying faith is one and the same, which from the Apostles even until now, has been preserved in the Church and transmitted in truthfulness.” After mentioning other disciples and successors of the Apostles, he continues: “Wherefore, since there are such proofs to show, we ought not still to seek amongst others for truth which it is easy to receive from the Church, seeing that the Apostles have brought together most fully into it, as into a rich repository, all whatever is of truth, that every one that willeth may draw out of it the drink of life.… But what if the Apostles had not left us writings: would it not have been needful to follow the order of that tradition which they delivered to those to whom they committed the churches—an ordinance to which many of the barbarian nations who believe in Christ assent, having salvation written, without paper and ink, by the Spirit, in their hearts, and sedulously guarding the old tradition?” (Adv. Hæres., l. iii., 3, 4).
(b) Irenæus then shows that the preaching of the Apostles, continued by their successors, contains a supernatural guarantee of infallibility through the indwelling of
