THIS IS MY BODY
"It was natural then, and it is natural today, to point to a representation of something and say that the representation is the thing. For example, I look at a photograph of our house and say, 'This is our house.' It would not enter anyone’s mind to think I mean that the photograph was transformed into my house. If Jesus stooped down and drew a camel in the sand, He would say, 'This is a camel.' The drawing doesn’t become a camel. It represents a camel."
(John Piper: What Jesus Demands from the World. Crossway Books. 2006. p.347).