Luke 22:12

And he shall shew you a large upper room furnished: there make ready.

Jesus assigned Peter and John to prepare the Passover supper in a dwelling at Jerusalem. Peter and John were two disciples closely associated in labor. They were to follow a man bearing a pitcher of water into a house and ask the owner, the goodman of the house, for the guest chamber. The secret sign and commanding form of the message guarded against premature movements by traitors coming to the supper and repeating the action planned by Judas. The householder's ready offer reflected the custom in Jerusalem of accommodating strangers who desired to celebrate the Passover.

As Jesus said, the owner would show them a large furnished upper room where they were to make ready the Passover meal. Everything happened exactly as Jesus had foretold, meeting with the ready assent of the master of the house. The room was the setting for the meal with the twelve and for the institution of the Lord's Supper, the memorial of His sacrifice that replaced the Passover and was to continue through all time.

After eating the Passover supper there with His disciples, Jesus went with them to the garden of Gethsemane, where He often went to pray, talking with them and teaching them as they walked until He became strangely silent as they neared the garden. It was the memorable room where Jesus shared the last supper with His disciples on the last night before His death. After returning to Jerusalem, the disciples gathered there and passed the Sabbath mourning for Him, and the two travelers from Emmaus came to them there. The disciples later met in that same room and saw Christ there after His resurrection.