What does Matthew 26:17 mean?
At this time in Israel's history, Passover and the Feast of Unleavened Bread were often considered a single, weeklong event. It began on the Jewish date of Nisan 15 and continued through Nisan 21. The disciples need a location which is suitable for the Passover meal, and assume that Jesus will want all of them to be present.This cannot be a last-minute choice since these preparations were extensive. First, a lamb was taken to the temple to be slaughtered by the priests. Then it was brought to the place of the meal to be cooked with bitter herbs, along with the other dishes. Four glasses of wine would be consumed per guest at designated moments in the meal. All this needed to be made ready for Jesus and the twelve disciples to eat and celebrate together after sundown on Thursday evening.
Jesus will give specific directions to find the place for their Passover meal. This event, detailed in upcoming verses, will become known in history as the Last Supper.