It seems to me that the explanation that would be given by, say, a Baptist is “simple”. RC explanations of the Eucharist are not – which I guess partially explains why it took so many centuries (Note: RCs draw mainly on St. Thomas Aquinas, who live more than 12 centuries after Christ).
"St. Ignatius became the third bishop of Antioch, succeeding St. Evodius, who was the immediate successor of St. Peter. He heard St. John preach when he was a boy and knew St. Polycarp, Bishop of Smyrna. Seven of his letters written to various Christian communities have been preserved. Eventually, he received the martyr’s crown as he was thrown to wild beasts in the arena.
“Consider how contrary to the mind of God are the heterodox in regard to the grace of God which has come to us. They have no regard for charity, none for the widow, the orphan, the oppressed, none for the man in prison, the hungry or the thirsty. They abstain from the Eucharist and from prayer, because they do not admit that the Eucharist is the flesh of our Savior Jesus Christ, the flesh which suffered for our sins and which the Father, in His graciousness, raised from the dead.”
"Letter to the Smyrnaeans", paragraph 6. circa 80-110 A.D
“Teaching of the Twelve Apostles (the Didache), 9:2; 14:1,** circa 90 A.D.**:
Regarding the Eucharist … Let no one eat and drink of your Eucharist but those baptized in the name of the Lord; to this, too, the saying of the Lord is applicable: Do not give to dogs what is sacred.”
St. Ignatius of Antioch, Epistle to the Romans,** 7, 110 A.D.:**
I desire the Bread of God, the heavenly Bread, the Bread of Life, which is the flesh of Jesus Christ, the Son of God, who became afterwards of the seed of David and Abraham; I wish the drink of God, namely His blood, which is incorruptible love and eternal life.
St. Irenaeus of Lyons, Against Heresies, [5,2,2]** 180 A.D.: **
If the body be not saved, then in fact, neither did the Lord redeem us with His Blood; and neither is the cup of the Eucharist the partaking of His Blood nor is the Bread which we break the partaking of His Body . . . He has declared the cup, a part of creation, to be His own Blood, from which He causes our blood to flow; and the bread, a part of creation, He has established as His own Body, from which He gives increase to our bodies.
Tertullian [ca. 200/206 AD] in his treaties on Prayer [6,2], quotes John 6 in connection with a spiritual understanding of the Lord’s prayer “give us this day our daily bread.” In a spiritual sense Christ is our daily Bread, presumably because of the practice of the daily reception of the Eucharist END QUOTES
Might I suggest that our Beloved Thomas was only reaffirming what had been taught, believed and accepted LONG before God Thomas to us:thumbsup: