Commentaries:
Jesus' answer to their incomprehension is to point them to His authority, saying in effect, "If you see the Son of man ascending to heaven, will this not prove where He came from, as well as the authority of His words that you just heard? My flesh cannot benefit you. Stop thinking that I was literally asking you to eat My flesh or drink My blood. It is My spirit, My person in the act of sacrificing Myself, that bestows and sustains spiritual life, even everlasting life. The words that I have spoken to you are full of My spirit and therefore My life." Unbelief lay at the root of their problem, so they could not understand.
John W. Ritenbaugh
Eating: How Good It Is! (Part Four)
Other Forerunner Commentary entries containing John 6:62:
John 3:1-12