John 6:51-54

51I am the Living Bread that came down out of heaven. If anyone eats of this Bread [believes in Me, accepts Me as Savior], he will live forever. And the Bread that I will give for the life of the world is My flesh (body).”

52Then the Jews began to argue with one another, saying, “How can this man give us His flesh to eat?”

53And Jesus said to them, “I assure you and most solemnly say to you, unless you eat the flesh of the Son of Man and drink His blood [unless you believe in Me as Savior and believe in the saving power of My blood which will be shed for you], you do not have life in yourselves.

54The one who eats My flesh and drinks My blood [believes in Me, accepts Me as Savior] has eternal life [that is, now possesses it], and I will raise him up [from the dead] on the last day.