The people in the synagogue at Capernaum find Jesus’ words shocking. Eat his flesh? Drink his blood? Many of his own disciples leave after this conversation. Jesus does not call them back by softening what he said. He lets the words stand.
The Church has always heard these words at the Holy Qurbana. The bread and wine offered and consecrated become for us the body and blood of Christ. We do not only think about him or remember him. We receive him, and Jesus says that whoever receives him remains in him, and he in them.
It is easy to let the Qurbana become routine: something we attend, stand through and leave. This Gospel asks us to see it as Jesus saw it: food for eternal life, given for the life of the world. Preparing for it, through fasting, confession and prayer, is how we take it seriously.