In the Eastern Orthodox and Eastern Catholic liturgical tradition, the omophorion (Greek: , meaning "[something] borne on the shoulders"; Slavonic, omofor) is the distinguishing vestment of a bishop and the symbol of his spiritual and ecclesiastical authority. Originally woven of wool, it is a band of brocade decorated with four crosses and an eight-pointed star; it is worn about the neck and shoulders.
By symbolizing the lost sheep that is found and carried on the Good Shepherd's shoulders, it signifies the bishop's pastoral role as the icon of Christ. All Orthodox bishops wear the omophorion. Clergy and ecclesiastical institutions, including seminaries, subject to a bishop's authority are often said to be "under his omophorion".
The equivalent vestment in Western Christian usage is the archiepiscopal pallium, the use of which is subject to different rubrics and restrictions.
The omophorion has two forms: the ancient great omophorion, which passes around the neck, is folded in the front, and hangs down past the knees in both the front and the back, like a loosely worn long scarf; and the small omophorion which is much simpler, passing around the neck and hanging down in the front similar to an epitrachelion (stole), only wider and shorter, coming down a little past the waist. Because of the complexity of the great omophorion, and because of the dignity of the episcopal office, whenever the bishop puts on the omophorion or takes it off, he is assisted by two subdeacons.
Whenever the bishop presides at any divine service, he will be vested in the omophorion. If he is serving the Divine Liturgy, he will wear both the great and the small omophorion at different times over his liturgical vestments. At any service other than the Divine Liturgy, he will usually wear the small omophorion.
At the Divine Liturgy, the rubrics call for the bishop to put on and take off the omophorion numerous times. When he is first vested, the subdeacons place the great omophorion on him, but afterwards, when the rubric calls for him to wear the omophorion, it is replaced, for the sake of convenience, with the small omophorion. In some places, when several bishops concelebrate, it is now the custom for the chief celebrant to use the great omophorion when called for, and the other bishops to wear the small omophorion throughout.
In the Ruthenian Catholic Church and the Ukrainian Greek Catholic Church, often only the great omophorion is used. In this simplified usage, the great omophorion is not replaced by the small omophorion, and is worn by the bishop throughout the entire liturgy. In such cases, the omophorion is often sewn into shape and can be simply draped onto the shoulders rather than wrapped on by assistants. Some Ukrainian Greek Catholic bishops, however, insist on the full ceremonial.
In the early church, the omophorion was a broad band of white wool ornamented with crosses and draped loosely over the neck, shoulders, and breast. The modern Roman pallium developed from this early omophorion. In the West, over the centuries, its form has changed into a circular, thin woolen garment for the shoulders, with short, weighted pendants before and behind. The papal pallium, originally adopted by Pope Benedict XVI at the beginning of his pontificate, is closer to the original omophorion. Pope Benedict XVI later reverted to the original design of the pallium, but with red crosses instead of black.
In the East, the only change in the omophorion has been an increase in its width and a shift in the material from which it is made. The omophorion was documented about the year 400 AD as a liturgical vestment of the bishop in Isidore of Pelusium. It was made of wool and was already seen as symbolic of the duties of bishops as shepherds of their flocks. In the miniatures of an Alexandrian Chronicle of the World, written probably during the fifth century, the omophorion was represented in an image. In later times, it was shown on the renowned ivory tablet of Trier, depicting the solemn translation of relics. Among the pictures dating from the seventh and eighth centuries, in which the omophorion is illustrated, are the lately discovered frescoes in S. Maria, Antiqua in the Roman Forum. The representation of the omophorion in these frescoes is essentially the same as the vestment in its present form.
The omophorion probably developed from the civil omophorion, a shoulder garment or shawl in general use. Bishops may have introduced directly by a positive precept a humeral cloth resembling the ordinary omophorion and called by that name, , to be used as a liturgical pontifical badge. Alternatively, bishops may have used the civil omophorion as an ornament without any special significance, but in the course of time it gradually developed associations as a distinctively episcopal ornament. Finally it symbolized an episcopal badge of office.
In Oriental Orthodoxy, the omophorion takes a number of different forms: