1 Corinthians 19:15-16 15 I speak as to sensible people; judge for yourselves what I say. 16 The cup of blessing that we bless, is it not a participation in the blood of Christ? The bread that we break, is it not a participation in the body of Christ?
1 Corinthians 11:23-30 23 For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread, 24 and when he had given thanks, he broke it, and said, “This is my body which is for you. Do this in remembrance of me.” 25 In the same way also he took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.” 26 For as often as you eat this bread and drink the cup, you proclaim the Lord's death until he comes.
27 Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord. 28 Let a person examine himself, then, and so eat of the bread and drink of the cup. 29 For anyone who eats and drinks without discerning the body eats and drinks judgment on himself. 30 That is why many of you are weak and ill, and some have died.
Jesus didn't seem to think it was the same or else He would not have given the bread AND the cup and commanded to eat AND drink.
So again I ask, Who gave the RCC authority to change that and when?
Don't Catholics hold the words of Jesus recorded in Scripture above all else? Why don't they follow His instructions then?
The command is to believe you're receiving Christ fully,which is present in both the consecrated bread and wine
Now Answer the question if you believe Christ is eternal and ALWAYS existed.
If you don't believe Christ existed eternally than you're not a Christian.