>>762112
>I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world.
By talking about giving his flesh, he is talking about the coming sacrifice of his life.
The communion was to commemorate this sacrifice:
>23 For I have received of the Lord that which also I delivered unto you, that the Lord Jesus the same night in which he was betrayed took bread:
>24 And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: THIS DO IN REMEMBRANCE OF ME.
>25 After the same manner also he took the cup, when he had supped, saying, this cup is the new testament in my blood: this do ye, as oft as ye drink it, IN REMEMBRANCE OF ME. (emphases mine)
When he was first talking about giving his flesh, they didn't even know or believe he was going to die soon. They had always heard of the messiah as a conqueror. So of course people were confused. It was not uncommon for the Pharisees and even the disciples to misunderstand him. He often spoke in parables. We observe the communion 'in remembrance' of him.
Nobody interprets Bible prophecy completely literally. For example, when Revelation talks about the moon turning into blood, everyone realizes this is absurd in a literal sense and instead interpret it as, for example, some sort of eclipse or supernatural event that turns the moon red. In the same manner, people recognize that Jesus transforming into a literal loaf of bread is absurd. People recognize that the idea that what looks like a wafer according to every method of observation known to man is secretly literal human flesh is absurd.