Bede, on 1John 4:3

“And every spirit that dissolveth Jesus, is not of God: and this is Antichrist, of whom you have heard that he cometh, and he is now already in the world.”

“And every spirit that dissolves Jesus is not from God. He dissolves Jesus who denies either His divinity, or His soul, or His flesh, which the Catholic faith teaches that He truly has. He also dissolves Jesus who, by perversely interpreting or by perverse sight, corrupts the commands and words of Jesus. But also he who disturbs the unity of the holy Church, which Jesus came to gather, strives, as far as is in him, to dissolve Jesus. Nor is it surprising if such are not from God, who disband the works, words, or sacraments of God. For they are so far from God, that some of them who wished by evil doctrine to separate the divinity of Christ from human dispensation, have also erased this verse, where it is said, "And every spirit that dissolves Jesus is not from God," from this Epistle, lest their error be convicted by the authority of blessed John. Finally, Nestorius revealed that he did not know this sentence was inserted into the authentic copies, and therefore he did not fear to dissolve Jesus, and thus render himself foreign to God, saying that the blessed Virgin Mary was not the mother of God, but only of a man, such that he made another person of the man, another of the Deity; nor did he believe in one Christ in the Word of God and in flesh and soul, but preached separately another Son of God, another of man.”

Imported from an open dataset — not yet checked against the printed edition.