It was early morning on Lake Galilee. The disciples were tired, having rowed against the wind through the night, when they were startled by a ghostly figure walking on the water near the boat. Their cry of alarm was more than matched by Jesus' reassurance, "It is I. Don't be afraid!" (Matthew 14:22-27). Peter, who was quick to respond, wanted to be sure that he was hearing and seeing rightly, so he challenged the misty figure to answer back. He asked that if it was Jesus, then he would respond to a command to walk on the water.