'We are all in there together'

An Orthodox Catholic priest explained in simple terms the mystery of the Eucharist in response to a question from a parent of child about to receive Holy Communion. He wrote:

So we don’t just say that we want Christ to live metaphorically in our hearts — we receive Him physically in our bodies. God comes to us, God transforms that bread and wine, so that He can truly become a part of us. Literally.

He also went on to write something very beautiful that I had not quite thought of before:

We don’t just say that we are meant to be in communion with God and with one another, but our priests place bits of bread for the Theotokos and the Saints, for the loved ones who have gone before us, into the communion chalice so that we are all in there together when we approach the one holy chalice as a parish community.

Far from imagining that the real change in the bread and wine was some notion invented in the West in the middle ages, St Cyril of Alexandria mirroring many other early Fathers of the Church wrote in 430 A.D.:

Proclaiming the death according to the flesh of the only begotten Son of God, that is Jesus Christ, and professing his return to life from the dead and his ascension into heaven, we offer the unbloody worship in the churches and so proceed to the mystical thanksgivings and are sanctified having partaken of the holy flesh [corpus] and precious blood of Christ, the saviour of us all. This we receive not as ordinary flesh, heaven forbid, nor as that of a man who has been made holy and joined to the Word by union of honour, or who had a divine indwelling, but as truly the life-giving and real flesh of the Word. For being life by nature as God, when he became one with his own flesh, he made it also to be life-giving, as also he said to us: "Amen I say to you, unless you eat the flesh of the Son of man and drink his blood" . For we must not think that it is the flesh of a man like us (for how can the flesh of man be life-giving by its own nature?), but as being made the true flesh of the one who for our sake became the son of man and was called so. (Third Letter to Nestorius 7)

He rounded off his letter to Nestorius as follows:

We have been taught to hold these things by the holy apostles and evangelists and by all the divinely inspired scriptures and by the true confession of the blessed fathers.

In Greek theology the term Metousiosis means change of essence: Meta means change while Ousia means substance or being.

No less than 29 times is the word flesh or σάρξ (sarx) used in this short letter by Cyril.  He used the same word as used by St John in chapter 1 and 6 of his Gospel.