Orsisius
FREE Catholic Classes
( Arsisios , Oresiesis-Heru-sa Ast)
Egyptian monk of the fourth century; was a disciple of Pachomius on the Island Tabenna in the Nile. When Pacomius died (348), Orsisius was chosen as his successor; but he resigned in favour of Theodore. It was not till Theodore's death (c. 380) that Orsisius, advised by St. Athanasius, accepted the office of hegumen. Theodore and Orsisius are said to have helped Pachomius in the composition of his rule; Gennadius (De vir. ill., IX) mentions another work;
Oresiesis the monk, a colleague of Pachomius and Theodore and a man perfectly learned in the Scriptures, composed a Divinely savoured book containing instruction for allmonastic discipline, in which nearly the whole Old and New Testaments are explained in short dissertations in as far as they affect monks ; and shortly before his death he gave this book to his bretheren as his testament.This is supposed to be the work; "Doctrina de institutione monachorum" translated by St. Jerome into Latin (P.L., CIII, 453 sq., and P.G., XL., 870-894). Migne prints after it (P.G., XL., 895 sq.) another work attributed to the same author: "De sex cogitationibus sanctorium", which, however, is probably by a later Oresius.
Come Grow With Us
Sign up and walk the Catholic journey with millions around the world.
Receive inspiring emails on saints, daily readings, and free faith-building resources—no cost, ever.
Catholic Online Is Free. But We Need Your Help.
Please Watch
- 7 Morning Prayers
- Mysteries of the Rosary
- Litany of the Bl. Virgin Mary
- Popular Saints
- Popular Prayers
- Female Saints
- Saint Feast Days by Month
- Stations of the Cross
- St. Francis of Assisi
- St. Michael the Archangel
- The Apostles' Creed
- Unfailing Prayer to St. Anthony
- Pray the Rosary
Copyright 2026 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2026 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.
Catholic Online is a Project of Your Catholic Voice Foundation, a Not-for-Profit Corporation. Your Catholic Voice Foundation has been granted a recognition of tax exemption under Section 501(c)(3) of the Internal Revenue Code. Federal Tax Identification Number: 81-0596847. Your gift is tax-deductible as allowed by law.