The Sacraments of the Orthodox Church, like the Church Herself, can be said to possess a double character, for they are at the same time inward and outward, visible and invisible. They combine in themselves both an outward visible sign with an inward spiritual grace. For example, in the Holy Eucharist, we eat the Body and Blood of Christ, although visibly they appear to be bread and wine. Likewise, in Holy Baptism there is an outward washing with water, but simultaneously an inward cleansing of sins. Thus, we often speak of the Sacraments as being mysteries, for, in the sense outlined above, what we see is not what we believe.
In most of the Sacraments, the Holy Church takes things that are material, e.g., bread, wine, water, and oil, and make them vehicles of the Holy Spirit, in imitation of our Lord’s Incarnation, when, as the Second Person of the Trinity, He took material flesh and made it a vehicle of the Holy Spirit. We also note here another characteristic of the Sacraments, in that they are personal. That is, the grace of God is given to every Christian individually. Therefore, in most of the Sacraments, the Priest pronounces the Christian name of each person as the Sacrament is administered. Thus, for example, at the Holy Eucharist, when giving Holy Communion, the Priest says, the Servant (or Handmaid) of God