Question from one of our children at church last week: "There's this I can't understand. The bread isn't really God's body and the wine isn't really God's blood. Why do you pretend it is?"
Good question. We talk this way because Jesus did when He told us to keep doing this to remember Him. In 1 Cor 11, Paul criticizes the church for not celebrating the Supper the right way. In verse 23, he tells us how to do it rightly, part of which is to say, "This is my body" when we break the bread. It isn't that we are pretending; we are saying something we don't fully understand. The part we understand is that Jesus is food and joy for our souls, like bread and wine are food and joy for our bodies.