The first twelve chapters of the gospel of John describe the public ministry of Jesus. Starting in chapter 13, most of what John describes are the last private moments Jesus enjoys prior to His crucifixion. This begins with Jesus washing the disciples' feet, establishing both an example and a command for humble service. Jesus also predicts His impending betrayal and Peter's cowardly denials. Following chapters contain Jesus' last instructions to the disciples, including a rich collection of truths which are central to the Christian faith.