Jesus has just fed the 5,000 and walked across the Sea of Galilee. The crowds came searching for him, looking for him to meet their physical need for food. Jesus, knowing why they are come and what their greatest need is, consistently directs the dialogue to spiritual things. The crowds are so set on physical food that they miss the incredible truth Jesus speaks of. The contrasting responses to Jesus' words are instructive for us today as we also respond to the Lord Jesus.