[metmom]

Catholic teaching is we receive the full Christ even when we receive only one of the two

But Christ's command was to eat the bread and drink the cup.

Who gave the RCC authority to change that and when?

I hope this clears this up,dear friend

It clears up nothing.

[stfassisi]

But Christ's command was to eat the bread and drink the cup...Who gave the RCC authority to change that and when?

It's the same Christ in the consecrated bread and wine,dear sister,nothing was changed with God and the Holy Trinity since He is outside of time and unchangeable.God allows us reach into the eternal Christ at the Consecration of Bread and Wine

Do you believe Christ is eternal and always existed?

[Natural Law]

"Who gave the RCC authority to change that and when?"

We have to pray for and forgive those who put us into the dilemma of having to either disbelieve their claims to have once been Catholic, believe that they no longer remember what they once learned, or are lying about the teachings of the Church. When they refuse to respond to efforts to teach and clarify or to enter into an honest dialog the causes of their actions become even more tragic and in greater need of our compassion.

Peace and Blessings.