Venerable
Venerable Isidore of Pelusium
ок. 370 — ок. 449
Venerable Isidore of Pelusium — an Egyptian monastic ascetic, abbot near Pelusium, disciple and defender of St. John Chrysostom, author of over 2,000 letters on matters of faith and morality, who died peacefully around 449.
Venerable Isidore was born around 370 in Alexandria to a Christian family related to Archbishop Theophilus of Alexandria, and received an excellent education. As a young man he withdrew to a mountain near the city of Pelusium in the Nile Delta, embraced monastic life, and became abbot of the community there.
He became a disciple and staunch defender of St. John Chrysostom, interceding on his behalf during the persecution by Empress Eudoxia and later persuading Patriarch Theophilus to restore Chrysostom's name to the liturgical diptychs. Isidore wrote to Emperor Theodosius II urging the convocation of the Third Ecumenical Council to resolve the Nestorian controversy, and mentored St. Cyril of Alexandria, urging him to avoid needless contention.
His enduring legacy is a corpus of over 2,000 surviving letters addressing doctrine, Scripture interpretation, monastic discipline, and practical morality; he died peacefully around 449.
His feast is kept on February 4/17.
IMPORTANT CORRECTION: category martyr→venerable — the saint died peacefully as a monastic ascetic, not through martyrdom. The identification is confirmed by the direct Greek inscription on the image, "Saint Isidore of Pelusium."