Adelphopoiesis

The liturgical rite

Byzantine liturgical books preserved between the ninth and fifteenth centuries record specific prayers for creating spiritual brothers. The liturgy invoked sacred companion pairs from early church history, particularly Saints Sergius and Bacchus or Saints Cosmas and Damian, who were renowned for their mutual devotion. Unlike Orthodox weddings, the service did not feature a ceremonial crowning of the couple. Instead, the participants united their bond through shared reception of the Holy Eucharist. In places such as Greece and Russia, partners also made a personal exchange of their baptismal crosses, transforming a private pledge into a lifelong religious commitment.

Spiritual and social purposes

Historically, the ceremony met diverse spiritual and social needs across Eastern Christian communities. It frequently replaced ancient blood-brotherhood customs that the church prohibited, offering a sanctioned way to seal alliances between political leaders or religious companions. Theologian Pavel Florensky described the resulting bond as a foundational community unit, blending deep friendship with shared spiritual struggle and endurance. In everyday village life, the pact established mutual obligations of support and defense. Under urgent danger, individuals in Slavic regions could even invoke the covenant directly by greeting an adversary as a brother through God.

Modern debates and views

During the late twentieth century, the ritual became the focus of intense academic and theological debate. Historian John Boswell proposed that these medieval services represented same-sex unions comparable to marriage, pointing to shared liturgical elements. However, many Byzantine specialists, including Claudia Rapp and Stefano Parenti, disputed his readings, maintaining that the texts formed chaste monastic pairings or spiritual fraternities with distinct liturgical forms. Meanwhile, ethnographic studies of Serbian traditions indicated that regional brotherhood customs carried diverse social, romantic, and communal meanings before falling out of use in the early twentieth century.

How Adelphopoiesis is kept

During the historical ceremony, two individuals stood before a priest in church. The officiant recited prayers dedicated to holy pairs, asking God to grant the participants spiritual kinship as spiritual brothers. The participants received the Holy Eucharist together to seal the sacrament. Outside the public liturgy, the two often completed their union in private by exchanging their lifelong baptismal crosses, pledging mutual loyalty, shared endurance, and lifelong spiritual support.

When and where

The ceremony had no fixed calendar date. It was held whenever two companions sought a formal spiritual bond, arranged with a local priest or celebrated during a regular liturgical service.

The practice appeared across the Byzantine Empire, southern and eastern Slavic lands such as Serbia and Russia, and parts of Catholic Western Europe before declining in the late medieval and early modern eras.

What Adelphopoiesis means

The ritual symbolised spiritual kinship transcending biological ties, calling upon the grace of the Holy Spirit. By invoking paired martyr saints and sharing the Eucharist, the two companions dedicated their lives to mutual patience, co-martyrdom, and virtuous friendship under God.

Questions people ask about Adelphopoiesis

See also

Holy FireA fire ceremony in Jerusalem each year, kept by Orthodox Christians before EasterKaddishA Jewish hymn of sanctification recited during prayer services and mourning rituals.OvooA stone cairn on a peak or pass, circled by travellers and honoured in sky worshipKol NidreAn Aramaic declaration of vow annulment that opens the Yom Kippur evening service in Jewish synagogues.

Good reading and sources

• Adelphopoiesis on WikipediaEncyclopedia
• Wikidata recordOpen data

It may contain mistakes. Traditions differ from one family, village and community to the next, and the people who keep them know them best. If something is wrong, tell us. Last refreshed 2026-10-06.