Five chapters, in a borrowed room, hours before everything.
John gives five chapters to one evening. There is no crowd, no argument with officials, nobody to win over — just a meal in a borrowed upstairs room, and the longest stretch of continuous teaching anywhere in the Gospels.
What makes it strange is the audience. Everything in these chapters is said to people who are hours away from failing him, and he knows it while he says it.
If I then, the Lord and the Teacher, have washed your feet, you also ought to wash one another’s feet.
Washing the feet of guests was done by the lowest servant in a household, and in a room with no servant it simply went undone rather than fall to anyone present. He does it himself, during the meal, having said nothing beforehand. The teaching comes afterwards, once the thing is already done and they are still sitting with wet feet.
Almost every comfort in these chapters is offered to people who are about to let him down — one of whom leaves mid-meal to arrange it. He does not withhold any of it on that account, which is itself most of the teaching.
And nothing in it depends on the evening going well. "Let not your heart be troubled" and "I have overcome the world" are said hours before the worst night of their lives, by someone who knew that was coming. That is why they are worth having: they were never conditional on a good outcome.
Walking with Jesus: Devotional has a collection called The Upper Room that walks this evening one teaching a day — each with the moment around it, a reflection, a prayer and one thing to carry into the day.
A one-time purchase, about five minutes a morning.