The reference Jesus made to eating his flesh and drinking his blood (John 6:53) is a metaphorical way of describing the person who draws on, claims, or lays hold of the reality of His atoning sacrifice by putting personal faith in him. We've constantly got to come back to that. The Gospels capture that from beginning to end. Jesus is a person who confronts us through his Word. And when we realize that he's confronting us, then we have to respond to him. That's the ground, the base, of what's being said in this passage. The flesh and the blood are words which point to Jesus' death as a sacrifice, but it's eating "me" that Jesus talks about—in other words, receiving him as he confronts us in his character as Savior and Lord.