it does not say he died for them, It says who they are (those who have faith on him, who seek the food which endures forever, who eat the bread sent from heaven, who partake of his flesh and blood)
Your adding to the word of God my friend. and again, rejecting everything else Jesus said in John 6.
Your like the roman catholic who says the eucharist is truely from God, and must be eaten at mass, He is taking one part of the passage, rejecting EVERYTHING ELSE JESUS SAID, and making a doctrine out of it.
Your both in error.