John 13 is the thirteenth chapter of the Gospel of John in the New Testament of the Christian Bible. The "latter half" or "closing part" of John's Gospel commences with this chapter. The nineteenth-century biblical commentator Alexander Maclaren calls it "the Holy of Holies of the New Testament" and the "most sacred part of the New Testament", as it begins John's record of the events on the last night before the crucifixion of Jesus Christ, emphasising Jesus' love for His disciples, demonstrated in the service of washing their feet, and His commandment that they love one another in the same way. The author of the book containing this chapter is anonymous, but early Christian tradition uniformly affirmed that John composed this Gospel. Text The original text was written in Koine Greek. This chapter is divided into 38 verses. Textual witnesses Some early manuscripts containing the text of this chapter in Greek are: Papyrus 75 (AD 175–225) Papyrus 66 (~200). Codex Vaticanus (325-350) Codex Sinaiticus (330-360) Codex Bezae (~400) Codex Alexandrinus (400-440) Codex Ephraemi Rescriptus (~450; extant verses 8-38) Papyrus 92 (5th century; extant verses 15–17) An ancient manuscript containing this chapter in the Coptic language is: Papyrus 6 (~AD 350; extant verses 1–2, 11–12). Places All the events recorded in this chapter and the succeeding chapters up to John 17 took place in Jerusalem. The precise location is not specified, but John 18:1 states that afterwards, "Jesus left with his disciples and crossed the Kidron Valley". Old Testament references John 13:18: Psalm Verse 1: the appointed hour Now before the Feast of the Passover, when Jesus knew that His hour had come that He should depart from this world to the Father, having loved His own who were in the world, He loved them to the end. From the Greek syntax and theme perspective, evangelical scholar D. A. Carson regards verse 1 as an introduction of the whole 'Farewell Discourse', whereas verses 2–3 show the first demonstration of the full extent of Christ's love. The narrative begins before the Feast of the Passover, when Jesus knew that His hour () had come that He should depart from this world to the Father, [when] having loved His own who were in the world, He loved them to the end. The appointed hour, anticipated earlier in the gospel () had now arrived. Jesus had announced publicly in that "the hour when the