This chapter is included in a section that covers John 13-17. The title of this section is “Jesus’ Preparation of His Disciples.” Chapter 13 covers the Last Supper. The first section concerns Jesus washing His disciples’ feet. This is discussed in verses 1-17.
John’s gospel gives details only covered in his gospel. These details include instructions given to the disciples at the Last Supper. It should be noted that this is the night that Jesus is arrested. Before Jesus gives final instructions to His disciples, He washes their feet. He also predicts His betrayal.