V.41 The Jews complain because He said that He had come down from heaven!
V.44 This verse takes from us all the credit for accepting the Lord Jesus and gives all glory to God. The bread which Jesus gave was His flesh, which He would give for the whole world. There could be no salvation for us if the Lord Jesus had only come to earth, and then had gone back to heaven. He must die.
V.51-58 This does not mean that we actually eat the flesh and drink His blood. But it does mean, that if we are going to be saved, it is through His death, and no other way. The death of Christ makes it very plain that the old life with which we were born can never inherit eternal life. It is only when we realize that the old life is condemned and put in the place of death, that we can know that our new life is in the Christ Who has died and has been raised again.
V.53 We EAT once for salvation.
V.54-57 The word changes to EATETH. These verses are for the believer. “Eateth” means that we must be eating over and over again. It is His death which keeps us in our new life.
V.60-71 Many could not accept what was just said, and gave up. But it only showed that their belief in Him was very shallow.
V.68 If our heart grows cold toward the Lord, who could we turn to that would make us happy? Peter’s answer is very clear.