7Then came the first day of Unleavened Bread on which the Passover lamb had to be sacrificed. 8And Jesus sent Peter and John, saying, "Go and prepare the Passover for us, so that we may eat it." 9They said to Him, "Where do You want us to prepare it?" 10And He said to them, "When you have entered the city, a man will meet you carrying a pitcher of water; follow him into the house that he enters. 11And you shall say to the owner of the house, 'The Teacher says to you, "Where is the guest room in which I may eat the Passover with My disciples?"' 12And he will show you a large, furnished upper room; prepare it there." 13And they left and found everything just as He had told them; and they prepared the Passover.
Luk_22:7 "Then came the first day of Unleavened Bread on which the Passover lamb had to be sacrificed" There is a chronological difference between the Synoptic Gospels (Passover) and John (the day of preparation, cf. Exo_12:6; Joh_13:1; Joh_18:28) on exactly what day the Lord's Supper took place. Remember that Jewish days start at dusk because of Genesis 1. The day of Jesus' crucifixion is uniform in all four Gospels as being Friday. If one retraces the lunar calendar back to Jesus' day in a.d. 30, the 14th of Nisan (cf. Lev_23:5-6) fell on a Thursday, the 15th of Nisan on a Friday, which fits exactly.
Luk_22:8 "And Jesus sent Peter and John" Only Luke names these two preparers. Usually James is included with this inner circle of Apostles, but not here.
▣"Go and prepare" This is a good example of an idiomatic use of a participle before an imperative, where both are used as imperatives (cf. Mat_28:19).
This preparation would have been done on the afternoon of the 14th of Nisan. The meal would be eaten that night (the 15th of Nisan).
Luk_22:9 "Where do You want us to prepare it" The disciples did not know the exact location, possibly because Jesus did not want Judas' betrayal to interrupt the meal.
Luk_22:10 "a man will meet you carrying a pitcher of water" Woman usually carried water in pitchers, men sometimes carried it in animal skins. This is another of many examples in the Gospels that can be interpreted as (1) the supernatural knowledge of Jesus or (2) a pre-arranged setting. The people of Jerusalem and surrounding areas opened their homes during these festival occasions for pilgrims.
Luk_22:11 "And you shall say to the owner of the house" This may have been John Mark's home, which became the disciples' meeting place in Jerusalem known as the upper room (cf. Act_12:12).
▣"the guest room" See note at Luk_2:7, where it is translated "inn."