The Eucharist is always challenging.

The gospel reading from Tuesday:

The crowd said to Jesus:
"What sign can you do, that we may see and believe in you?
What can you do?
Our ancestors ate manna in the desert, as it is written:

He gave them bread from heaven to eat."

So Jesus said to them,
"Amen, amen, I say to you,
it was not Moses who gave the bread from heaven;
my Father gives you the true bread from heaven.
For the bread of God is that which comes down from heaven
and gives life to the world."

So they said to Jesus,
"Sir, give us this bread always."
Jesus said to them, "I am the bread of life;
whoever comes to me will never hunger,
and whoever believes in me will never thirst."

These are challenging words. The people listening to Jesus thought he was talking about normal bread and then, bam! He says that He is the bread of life! That's something that no one could expect. He is still saying this to us today.