The Liturgy, necessarily requires, in order to be fulfilled and complete, a human altar (Temple of God), not a built one. But the altar erected in the Church, where two or more are gathered in my name, which is built on the relics of the saints, means that the true altar is the martyr, a human being turned completely into Christ (Sanctification for martyrdom). Martyrs have turned into Christ like Image, to the extreme limits of the capabilities of human nature, to martyrdom, and martyrdom becomes a symbol of eucharistic sacrifice “That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death; If by any means I might attain unto the resurrection of the dead.” (Philp 3:10). St. Augustine of Antioch on his way to martyrdom in Rome, wrote to the Romans saying: “I am the wheat of God, and let me be ground by the teeth of the wild beasts, that I may be found the pure bread of Christ.”(Chp IV) (Sanctification for martyrdom). Therefore, when we are fed Christ at the Eucharist we must have the Christ intentions, which is a mentality of love and sacrifice even to death (To die for your Lord). A Christian adapts his life to that of Christ not of this world, he must grow in us the spirit of love and sacrifice such as that of Christ himself, in order to be able to complete our Christian journey of life in this world (No Purgatory in the After life). We cannot continue living in this Christian living without that Christian spirit, the spirit of love, sacrifice and offering, the spirit of a wheat grain that dies in order to give many fruits… “For it is not my desire that you should please men, but God, even as also you do please Him. For neither shall I ever hereafter have such an opportunity of attaining to God; nor will you, if you shall now be silent, ever be entitled to the honour of a better work…I desire the bread (spiritual and through our sanctification) of God, the heavenly bread, the bread of life, which is the flesh of Jesus Christ…I desire the drink (spiritual and through our sanctification), namely His blood, which is incorruptible love and eternal life.” (Chp VII).
Our bodies (Temple of God) become the living sacrifices which transfers the sufferings of Christ onto the sanctified believers, through trans-substitution of the spiritual body and spiritual blood of Christ in the human altar. (Romans 12:1)
Finally, we have reached the understanding that the liturgy has three faces, Heavenly, Ecclesiastically (Church), and from the heart. But they are all ONE Liturgy and we cannot disconnect them or separate them. They are the One Church, which Christ is the corner stone of this building. He is personally in heaven, and in mysteriously in the body of the Church on earth and in our hearts where there is no life without his existence. Therefore, this Liturgy of Body and Blood of Christ, is a complete, universal, and entire. A liturgy that encompass heaven and earth, Angels and human, saints and non-saints, and through this Liturgy we will enter the Kingdom of Heaven, the kingdom of the Father, Son and Holy Spirit. Through and by this Liturgy we are hollowed, and we are hollowed we will carry the word of God to others.
In conclusion, the real presence of Christ is enveloped in the one Church, comprising of the heavenly and the earthly, encompassing Heavenly, Ecclesiastically (Church), and from the heart of every witness present at the Eucharist.
The trans-substitution is happening within the human altar, so that those sanctified for martyrdom, in the Image of Christ are become the body and blood of Christ, manifest in the earthly realm, for the world to see the works of God, by the sanctifying works of the Holy Spirit. Christ's presence is in the temple of God, as Jesus said.....
"You in me and I in you"
And in another place he says....
You shall surely drink from my cup, for this points to the greater calling, that is sanctification to martyrdom and we who are sanctified in Christ become the living sacrifices, that are pleasing to God.
As far as producing flesh and blood in the earthly realm through objects like bread and wine, is never the purpose of the Eucharist. The purpose is to make the believers the good tasting wine that would be pleasing to the wedding organiser who is God the Father, who compliments his Son at his wedding, in saying that you have left the best tasting wine until last. So his body and bread commemorated in Christ, is for the memorial of our own bodies, the human altar, who is being transformed literally in our adoption into sonship.
No priest is performing the sacrifice, rather our Father in Heaven, is binding up things from earth to heaven, in honouring his Son, by transforming us into the Image of his beloved Son, Jesus Christ. As St. Augustine of Antioch would say present your bodies as living memorials onto God. This is where Jesus said.....
whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven. (Matthew 18:18)