An Orthodox deacon is ordained to assist at the Divine Liturgy and other services, most visibly by chanting the litanies that punctuate Orthodox worship, proclaiming the Gospel reading, and assisting the priest or bishop in preparing and distributing communion, a role weighted more heavily toward direct liturgical assistance than the broader charitable and administrative emphasis often associated with the diaconate in Western Christian practice. Unlike the Roman Catholic diaconate, whose independent, permanent form largely disappeared for roughly a millennium before its twentieth-century restoration, the Orthodox diaconate has functioned continuously since the early church without a comparable lapse, giving Orthodoxy an unbroken rather than revived tradition of ordained deacons serving alongside priests and bishops.
As with priests, a man may be ordained deacon either as a married member of the white clergy, the more common path, serving a parish alongside a secular occupation in many cases, or as a monastic, in which case he is termed a hierodeacon rather than simply a deacon, following the same white and black clergy division that structures the presbyterate and episcopate.
A deacon is ordained by a single bishop, unlike the plurality normally required for priestly and episcopal ordination, reflecting the diaconate's status as an assisting rather than a presidential liturgical role; he may not celebrate the liturgy or consecrate the Eucharist independently, and his ordained ministry is exercised only in conjunction with, and under the direction of, the priest or bishop he is serving at the altar.