ow does the Orthodox Christian Church view the Mysteria (ries) (Sacraments) specifically Holy Communion?

Some teach that Holy Communion or the Lord's Mystical ("Last") Supper (which Orthodox Christians call "the Eucharist") is only a sign or symbol. Most of Christendom, however, believes it is far more. The Orthodox Church has always believed that we, in a mystery, receive the Body and Blood of Christ in the Holy Eucharist. What do Holy Scripture teach concerning Holy Communion?

During the reign of the impious Diocletian, who raised up a great persecution against the Christians, there lived in the city of Iconium a fair and noble maiden named Parasceva. Her parents, who were Orthodox, reared her well, instructing her in the holy faith and teaching her to keep the Lord's commandments. However, they reposed in the Lord while their blessed daughter was still very young, so she was left as their considerable estate.

The older I grew, the more I perceive the instability the vanity of earthly things. Oh, why do we trouble ourselves in vain? Our life is short--dust, ashes, a dream--and in a little while we shall taste corruption. Today you have your health, and tomorrow you lose it; today you are laughing, and tomorrow you are sullen. Now your eyes are shedding tears from an abundance of joy, and soon they will be shedding tears from pain and grief; today the economy is stable, and tomorrow misfortune strikes; today you receive good news, and in a little while bad news replaces it.