“Since therefore we have such proofs, it is not necessary to seek the truth among others which it is easy to obtain from the Church; since the apostles, like a rich man [depositing his money] in a bank, lodged in her hands most copiously all things pertaining to the truth, so that every man, whosoever will, can draw from her the water of life. . . . For how stands the case? Suppose there arise a dispute relative to some important question among us, should we not have recourse to the most ancient churches with which the apostles held constant conversation, and learn from them what is certain and clear in regard to the present question?” (ibid., 3:4:1).
Irenaeus of Lyons [120-180 AD] Adversus Haereses (Book III, Chapter 4)
“The true knowledge is the doctrine of the apostles, and the ancient organization of the Church throughout the whole world, and the manifestation of the body of Christ according to the succession of bishops, by which succession the bishops have handed down the Church which is found everywhere” (ibid., 4:33:8).
Irenaeus of Lyons [120-180 AD] Adversus Haereses (Book IV, Chapter 33)
“Far be it from me to speak adversely of any of these clergy who, in succession from the apostles, confect by their sacred word the Body of Christ and through whose efforts also it is that we are Christians” (Letters 14:8 [A.D. 396]).
Jerome, St [347-420 AD] Against the Pelagians (Book I)
“[T]here are many other things which most properly can keep me in [the Catholic Church’s] bosom. The unanimity of peoples and nations keeps me here. Her authority, inaugurated in miracles, nourished by hope, augmented by love, and confirmed by her age, keeps me here. The succession of priests, from the very see of the apostle Peter, to whom the Lord, after his resurrection, gave the charge of feeding his sheep [John 21:15–17], up to the present episcopate, keeps me here. And last, the very name Catholic, which, not without reason, belongs to this Church alone, in the face of so many heretics, so much so that, although all heretics want to be called ‘Catholic,’ when a stranger inquires where the Catholic Church meets, none of the heretics would dare to point out his own basilica or house” (Against the Letter of Mani Called “The Foundation” 4:5 [A.D. 397]).
Augustine of Hippo, St [354-430 AD] Against the Epistle of Manichaeus Called Fundamental