The book of Mark is the shortest of the four Gospels, but it's packed with one central message--that Jesus wants us to trade up. He wants us to trade what we know, what we think and how we see others for something better. It's a beautiful trade, because not only do we exchange something for something different, we exchange our lives and our perspectives for something better. It's a message that's at the heart of the Easter story, but it's shown through Jesus' interactions long before the crucifixion and resurrection.