Mark 14:15

12 On the first day of unleavened bread, when they sacrificed the Passover, his disciples asked him, "Where do you want us to go and make ready that you may eat the Passover?"

13 He sent two of his disciples, and said to them, "Go into the city, and there you will meet a man carrying a pitcher of water. Follow him,

14 and wherever he enters in, tell the master of the house, `The Teacher says, "Where is the guest room, where I may eat the Passover with my disciples?"`

15 He will himself show you a large upper room furnished and ready. Make ready for us there."

16 His disciples went out, and came into the city, and found things as he had said to them, and they prepared the Passover.

17 When it was evening he came with the twelve.

18 As they sat and were eating, Jesus said, "Most assuredly I tell you, one of you will betray me -- he who eats with me."