Augustine of Hippo, on 1John 4:2

“By this is the spirit of God known. Every spirit which confesseth that Jesus Christ is come in the flesh, is of God:”

“Nay, and that ye may know that he has referred the matter to deeds, he saith, "And every spirit, qui solvit Christum, which does away with Christ that He came in the flesh, is not of God." A doing away in deeds is meant. What has he shown thee? "That denieth:" in that he saith, "doeth away" (or, "unmaketh"). He came to gather in one, thou comest to unmake. Thou wouldest pull Christ's members asunder. How can it be said that thou deniest not that Christ is come in the flesh, who rendest asunder the Church of God which He hath gathered together? Therefore thou goest against Christ; thou art an antichrist. Be thou within, or be thou without, thou art an antichrist: only, when thou art within, thou art hidden; when thou art without, thou art made manifest. Thou unmakest Jesus and deniest that He came in the flesh; thou art not of God.”

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