“Anyone who does eat my flesh and drink my blood has eternal life, and I shall raise that person up on the last day.” John 6:54-56
To the crowd who followed Him seeking for bread, Jesus spoke some words which seemed to them madness - that they should eat His Flesh and drink His Blood. Jesus, on the other hand wished to make known that He was the true Paschal Lamb who was to be sacrificed, the innocent victim whose Body and Blood were necessary for the human race to receive His Life - for His life was in His Body and in His Blood.