The Orthodox Reception

Columbanus lived and died (615) four and a half centuries before the schism of 1054, in full communion with the undivided Church, and is therefore numbered among the pre-Schism Western saints whom the Orthodox Church honours — his feast falling on 23 November, the day of his death. His asceticism, with its heavy psalmody, its self-exile, and its medicinal, therapeutic conception of penance, has a markedly Eastern flavour, rooted in the same desert tradition that formed Orthodox monasticism. This file sets out the Orthodox reception with its proper care: what can be claimed, and what should not be over-claimed.

Tradition: Pan-Orthodox (pre-Schism; Celtic; missionary to the Continent)

A Pre-Schism Western Saint

The ground of Columbanus’s Orthodox veneration is chronological and ecclesiological. He belongs to the undivided Church: the great schism between Rome and Constantinople is conventionally dated to 1054, and the substantive estrangement developed over the centuries surrounding it, whereas Columbanus died in 615 — long before any of the issues that would divide East and West (the Filioque as a church-dividing matter, the developed claims of papal jurisdiction, the later sacramental and disciplinary divergences) had taken the form they later assumed (see Orthodoxy: The Pre-Schism Church). The saints of the undivided Church belong, in the Orthodox understanding, to the whole Church, East and West alike; and Columbanus, a monk in communion with both the Celtic churches and Rome and never touched by the later controversies, is among them. Orthodox observance keeps his memory on 23 November, the day of his repose at Bobbio (see Into Italy and the Lombards; on the cult, Bobbio and the Cult).

This pre-Schism status is the heart of the matter and should be stated precisely. It is not that Columbanus was “Orthodox rather than Catholic” — that opposition did not exist in his world and to impose it is the very anachronism the scholarship warns against (see The Celtic Church and Rome). It is rather that he belonged to the one Church before its division, and is therefore claimed, rightly, by the Orthodox as by the Roman Catholics, each as their own.

The Eastern Flavour of His Asceticism

What gives the Orthodox reception more than a merely chronological warrant is the recognizably Eastern character of Columbanus’s spirituality. Several features connect him directly to the monastic tradition of the Christian East:

The desert roots. Columbanus’s asceticism descends, like all early Western monasticism, from the Egyptian and Palestinian desert, mediated to Gaul above all by John Cassian, whose transmission of desert wisdom — the teaching on the eight principal faults, the medical cure of the passions, the primacy of obedience and humility — stands behind Columbanus’s own rule and sermons (see St. John Cassian; Discipline and the Monastic Ideal). His monasticism is the desert’s, carried west by way of Ireland.
The therapeutic conception of penance. The medicinal principle of his Penitential — sin as sickness, penance as medicine, the confessor as physician of souls, contraries cured by contraries — is precisely the conception of repentance dear to the Christian East and central to Orthodox spiritual fatherhood and the sacrament of confession (see The Irish Penitential System; Orthodoxy: Confession). In the spirit of its penitential discipline Columbanus is at one with the East, before the later Western drift toward a more juridical model.
The ideal of exile and compunction. The peregrinatio pro Christo, the voluntary exile understood as a “white martyrdom,” and the deep strain of compunctio (penthos, the gift of tears and mourning for sin) running through his sermons, are at home in the Eastern ascetic tradition of xeniteia (voluntary estrangement) and penthos (see The Call to Peregrinatio).
The unceasing prayer. The heavy psalmody of his rule and the tradition of continual liturgical praise associated with Bangor echo the Eastern ideal of unceasing prayer (cf. 1 Thessalonians 5:17), the laus perennis (see The Columban Rule).

These are not superficial resemblances but a genuine kinship of spirit: Columbanus practised in the West a monasticism whose lineage and inner logic the Orthodox recognize as their own. He is, in this sense, a Western saint who feels Eastern — which is only to say that he lived before the traditions diverged, when the asceticism of the one Church was, East and West, substantially one.

What Should Not Be Over-Claimed

Honesty requires the qualifications as much as the claims, and METHODOLOGY §4 demands them. Three cautions:

First, Columbanus revered Rome warmly, called Peter’s chair the source of Rome’s greatness, and appealed to the pope as judge (see Rome and the Celtic Churches). An Orthodox reading that enlists him as a proto-anti-papalist distorts him; his honour for the apostolic see was real, and he is as much the Catholics’ saint as the Orthodox’s. What he shows is the pre-Schism configuration in which honour-to-Rome and fidelity-to-custom coexisted — not a rejection of Rome.

second, the “Eastern flavour” must not be exaggerated into Eastern identity. Columbanus was a Latin churchman, writing in Latin, formed in the Western and Irish tradition, with no contact with the Greek East. The kinship is one of shared ascetic inheritance, not of Byzantine influence or affiliation; his “Easternness” is the common patrimony of the undivided Church, not a Greek importation [Disputed: some popular Orthodox and "Celtic Orthodoxy" writing presents the Celtic saints as distinctively "Eastern" or Byzantine in character; scholars caution that the Celtic churches were Latin and Western, and that their genuine ascetic kinship with the East reflects the common pre-Schism patrimony (the shared desert and Cassianic inheritance) rather than direct Eastern influence (cf. Charles-Edwards 2000; the cautions in modern scholarship against romanticized "Celtic Christianity")].

Third, his liturgical observance in modern Orthodoxy is real but limited in scope. He is commemorated as a pre-Schism Western saint, principally where local Orthodox communities (especially in the West) have taken up the memory of the saints of the undivided Church; he is not a universally prominent feast in the Byzantine calendar, and the depth of his cult varies (see Bobbio and the Cult).

What an Orthodox Reading Can Say

With those cautions, the positive Orthodox reception is well-founded and rich. Columbanus is a saint of the one undivided Church; his monasticism is the desert’s, recognizably the same tradition that formed Athos and the Egyptian and Palestinian fathers; his conception of penance is the therapeutic, medicinal one the East has always held; his ideal of exile-for-Christ and his spirit of compunction are the East’s xeniteia and penthos in Western dress; and his witness to a church united in faith across a real diversity of custom speaks directly to the Orthodox understanding of how the Church’s unity is constituted (see The Celtic Church and Rome). He may be honoured, then, not as a partisan of one side of a later quarrel, but as a holy father of the time before the quarrel — a bridge-figure in whom the Orthodox East can recognize its own ascetic and penitential spirit at work in the far West of the sixth- and seventh-century Church. The sober summing-up of his significance is the work of the final section (see Legacy and Assessment).

References

Charles-Edwards, T. M. Early Christian Ireland. Cambridge: Cambridge University Press, 2000. (The Latin and Western character of the Celtic churches; cautions against romanticized readings.)
Walker, G. S. M., ed. and trans. Sancti Columbani Opera. Dublin: Dublin Institute for Advanced Studies, 1957. (The medicinal penitential principle; the asceticism and compunction of the sermons.)
Wood, Ian. The Missionary Life. Harlow: Longman, 2001. (The cult of Columbanus and its spread.)
O’Hara, Alexander. Jonas of Bobbio and the Legacy of Columbanus. Oxford: Oxford University Press, 2018. (The saint’s reception and afterlife.)