To say that Jesus is just spiritually present in Communion, is to deny the Incarnation.
Jesus said, "This is my Body", and "This is My Blood of the New Covenant which is shed for many for the remission of sins" (see Matthew 26:26-28, Mark 14:22-24, Luke 22:19-20). When Jesus (who is God incarnate) declares that it is, that mean that it is!
John chapter 6 reveals to us the nature and purpose of the Eucharist, "Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. For my flesh is meat indeed, and my blood is drink indeed. He that eateth my flesh, and drinketh my blood, dwelleth in me, and I in him." (John 6:53-56 KJV). If Jesus is only spiritually present, then both Jesus and St. Paul were liars (sadly i've heard Anglicans describe the Eucharist in this manner). St. Paul, questioning the Corinthians, writes, "The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ? For we being many are one bread, and one body: for we are all partakers of that one bread" (1 Corinthians 10:16-17 KJV). Later on St Paul goes into more detail about what Communion is and how it should be done, giving a warning to those who take Communion: "... whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of that bread, and drink of that cup. For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body. For this cause many are weak and sickly among you, and many sleep" (1 Corinthians 11: 27-30 KJV). Do we believe the Scriptures? Do we really trust Jesus, the Apostles, and the Church Fathers and Mothers? Or do we, in reality, put more faith in our own minds and that of so called teachers?
Jesus came in the flesh, whoever does not believe this is operating in an Antichrist spirit ( see 2 John 1:7). In conclusion let's hear what a beloved Church Father has to say on the matter: St. Justin Martyr ( who lived around 100 - 165 A.D.) wrote, "And this food is called among us Εὐχαριστία [the Eucharist], of which no one is allowed to partake but the man who believes that the things which we teach are true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and who is so living as Christ has enjoined. For not as common bread and common drink do we receive these; but in like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh." (Taken from 'The Apostolic Fathers with Justin Martyr and Irenaeus' , by Philip Schaff, Chapter LXVI, Pg. 290).
i rest my case.
