Life and Ascetic Practice
According to the synaxarion, Agathon was a contemporary of Saint Macarius the Great and a disciple of Saint Lot, and he lived in asceticism in a skete in Egypt. Despite his renown for discernment and spiritual wisdom, which drew monks to seek his counsel, he was distinguished by exceptional meekness and accounted himself the most sinful of men.
By tradition, Agathon came to the Thebaid as a young man and trained under Abba Poemen, later moving to Scetis and living near the Nile with his disciple Abraham. He is recorded as having known other notable Desert Fathers, including Amoun, Macarius, Joseph, and Peter.
Teaching and Discernment
Agathon taught the primacy of interior vigilance over bodily asceticism, using the image of a tree: bodily asceticism is the foliage, but interior vigilance is the fruit.
The sayings relate that monks once tested his temperament by falsely accusing him of fornication, pride, and talking nonsense; he accepted these charges as spiritually beneficial. When, however, they accused him of heresy, he firmly refused, explaining that heresy is separation from God, and that he did not wish to be separated from God.
The synaxarion relates that three days before his death Agathon sat in silent contemplation, troubled by visions of standing before the Judgment Seat of God. Though the monks assured him of his righteousness, he maintained that he had no such hope until he should see God, for God's judgment is not man's judgment.
Sources and Dating
The OCA Synaxarion places Agathon's death around 435. The anchor record's designation of his era as Pre-Nicene is a data-field anomaly; given a death date of about 435, he is properly a post-Nicene figure of the fourth and early fifth centuries.
His teachings survive in the Apophthegmata Patrum, where he appears among the Desert Fathers documented in the alphabetical compilation.