Gnaw

In John's Gospel, chapter 6: 51-58, says that if we are going to have life within, we must gnaw on his flesh.  That is how he described the bread we eat at mass.  You don't gnaw on a symbol, so he means that he is really there in the bread.  I think John had more in mind than this, which is important.  He noticed that a lot of people said they believed in Jesus and that was Christian enough.  Some said that they did good works along with belief and that was good enough.  None of them were going to worship to receive the Eucharist.  John's Jesus says that without the Eucharist, you don't have eternal life.  It is something to consider, no?