By St. Hippolytus
St. Hippolytus was a disciple of St. Irenaeus, who was a disciple of St. Polycarp, who was a disciple of St. John
He wrote an extensive tract on the Antichrist which provides a great amount of detail. This provides great reading and is a great resource as to what this holy Father of the Church learned and taught in regards to this subject. As he was very close to the time period of St. John, this is an excellent resource that is gained from holy Scriptures and first hand testimony.
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