Jesus comes walking on water in a heavy storm and the disciples are amazed. Jesus challenges Peter's lack of faith that he can provide for them. The doubt of Peter highlights what happens when Christians adopt a horizontal perspective and focus on other things rather than looking to Christ for provision. Often, the horizontal perspective leads to more problems, including anxiety, anger and ingratitude. What Jesus is trying to teach his disciples is to look towards him with a vertical perspective amidst the "waves" or problems that arise in our lives.