From the Eastern/Byzantine perspective, priests share in the priestly ministry of the bishop, who shares in the priestly ministry of Christ. It is for this reason that iconographically Christ the “high priest” is always depicted as adorned with bishops robes, vestments, and crown. In the East, therefore, the priest’s ministry is totally dependent on the bishop, who is the head of his particular church. This is why the priesthood is sometimes viewed as being in the place of the college of apostles, and the bishop as in the place of God. The priesthood gathers around the bishop as his advisers, but also as his ministers.
In the East it is not just the priests that are seen as icons of Christ. All the Christian faithful are icons of Christ. It is for this reason that at their baptism each of the newly-illumined are traditionally given a cross without a corpus. We, as the icons of Christ, supply the missing corpus with our very selves.
According to Metropolitan Kallistos of Diokleia, the priest, during the Divine Liturgy, functions more “in persona populi” than “in persona Christi”.