Imagine hearing these words in the First Century:
Truly, truly, I say to you, whoever believes has eternal life. Your fathers ate the manna in the wilderness, and they died. This is the bread that comes down from heaven, so that one may eat of it and not die. I am the living bread that came down from heaven. If anyone eats of this bread, he will live forever. And the bread that I will give for the life of the world is my flesh.” The Jews then disputed among themselves, saying, “How can this man give us his flesh to eat?” So Jesus said to them, “Truly, truly, I say to you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. Whoever feeds on my flesh and drinks my blood has eternal life, and I will raise him up on the last day. Whoever feeds on my flesh and drinks my blood abides in me, and I in him. As the living Father sent me, and I live because of the Father, so whoever feeds on me, he also will live because of me. This is the bread that came down from heaven, not like the bread the fathers ate, and died. Whoever feeds on this bread will live forever.”
(John 6:47, 49-54, 56-58 ESV) (emphasis added)
The crowd asked, “How can this man give us his flesh to eat?”… and they were probably thinking, “Why would we want to it? That’s disgusting!”
They took him literally, but we understand that he was speaking figuratively. In fact, Jesus spoke figuratively all the time. In fact, Mark says that Jesus spoke in parables everywhere. (Mark 4:34).
To Jesus, the physical world was like one big figure of speech. He spoke about bread, and light, and salt, and a lamp, and a vine, and a mustard seed, and on and on and on. In this way, Jesus was continually challenging the people listening to him to think beyond the physical world they knew to consider spiritual truths that transcend it.
Many, like the Jews who asked how Jesus could give them his flesh to eat, had a hard time with the way Jesus spoke. Even the disciples, themselves, found these words the comparison of Jesus as living bread for people to eat hard to swallow (pun intended). (John 6:66)