On Protestantism in the Early Church

St. Vincent of Lerins died ca. 445

We inveighed also against the wicked presumption of Nestorius in boasting that he was the first and the only one who understood Holy Scripture, and that all those teachers were ignorant, who before him had expounded the sacred oracles, forsooth, the whole body of priests, the whole body of Confessors and martyrs, of whom some had published commentaries upon the Law of God, others had agreed with them in their comments, or had acquiesced in them. In a word, he confidently asserted that the whole Church was even now in error, and always had been in error, in that, as it seemed to him, it had followed, and was following, ignorant and misguided teachers. (The Commonitory Chap. 31.83)