Justinian is posed frontally in the center. He is haloed and wears a crown and a purple imperial robe. He is flanked by members of the clergy on his left with the most prominent figure the Bishop Maximianus of Ravenna being labelled with an inscription. To Justinian's right appear members of the imperial administration identified by the purple stripe, and at the very far left side of the mosaic appears a group of soldiers.
mosaic thus establishes the central position of the Emperor between the power of the church and the power of the imperial administration and military.Like the Roman Emperors of the past, Justinian has religious, administrative, and military authority.
clergy and Justinian carry in sequence from right to left a censer, the gospel book, the cross, and the bowl for the bread of the Eucharist. This identifies the mosaic as the so-called Little Entrance which marks the beginning of the Byzantine liturgy of the Eucharist.
