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Saint of the Day

St. Achillas

Saturday, 07 November 2026 · Ordinary Time

Memorial

Life & Legacy

St. Achillas, a revered bishop and theologian, lived during a tumultuous period in the early Church marked by significant theological disputes. He was the Bishop of Alexandria, one of the most influential cities in the ancient world, both politically and spiritually. Alexandria was a center of learning and theological development, and the role of its bishop was one of immense responsibility.

Achillas succeeded St. Peter of Alexandria, also known as St. Peter the Martyr, who had been a staunch defender of orthodox Christian teachings during the persecutions of the Roman Emperor Diocletian. Upon St. Peter's martyrdom, Achillas was chosen to lead the Church in Alexandria, a position that required both spiritual wisdom and unwavering commitment to the truth.

One of the most significant challenges Achillas faced was the emergence of Arius, a priest in Alexandria, whose teachings would eventually give rise to the heresy known as Arianism. Arianism denied the full divinity of Jesus Christ, claiming that He was a created being and not co-eternal with the Father. This doctrine posed a severe threat to the unity and orthodoxy of the Christian faith.

Initially, Achillas ordained Arius as a priest, likely unaware of the heretical views Arius would soon promote. However, once Arius began to publicly preach these unorthodox ideas, Achillas quickly recognized the danger they posed to the Church's teaching on the nature of Christ. Achillas took decisive steps to counter the spread of Arianism, seeking to defend the true faith as handed down by the Apostles.

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St. Achillas, pray for us.

© 2026 Catholic Online — All Rights Reserved.

This biography is reprinted from Catholic Online (catholic.org) for non-commercial educational and devotional use. All materials on Catholic Online — written, audible or visual — are the exclusive property of Catholic Online and are protected under U.S. and international copyright laws. Republished here with attribution under fair-use provisions for religious instruction.

Image: Catholic Online · Liturgical-calendar data: Catholic Readings API (General Roman Calendar)

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