Nicea, According to the book of Acts, Christians were breaking bread from house to house. No mention of a bishop saying a prayer and turning the bread into Christ. I can’t seem to find that one.
Also, many RC on here like to link to the early church fathers for theology. What about what St. Augustine wrote about the Eucharist?
“If the sentence is one of command, either forbidding a crime or vice, or enjoining an act of prudence or benevolence, it is not figurative. If, however, it seems to enjoin a crime or vice, or to forbid an act of prudence or benevolence, it is figurative. “Except ye eat the flesh of the Son of man,” says Christ, “and drink His blood, ye have no life in you.” This seems to enjoin a crime or a vice;
it is therefore a figure,
enjoining that we should have a share in the sufferings of our Lord, and that we should retain a sweet and profitable memory of the fact that His flesh was wounded and crucified for us” (Augustine, On Christian Doctrine, III).
We do it in remembrance and we are to never forget what Christ did for His elect, that He hung on a cross and spilled His blood so the elect can obtain salvation. The elect have to shoulder their cross everyday to follow Christ.
Luke 9:23 And he said to all, “If anyone would come after me, let him deny himself and take up his cross daily and follow me.