Mark 14:14-20

At the house he enters, say to the owner, ‘The Teacher asks: Where is the guest room where I can eat the Passover meal with my disciples?’ He will take you upstairs to a large room that is already set up. That is where you should prepare our meal.” So the two disciples went into the city and found everything just as Jesus had said, and they prepared the Passover meal there. In the evening Jesus arrived with the Twelve. As they were at the table eating, Jesus said, “I tell you the truth, one of you eating with me here will betray me.” Greatly distressed, each one asked in turn, “Am I the one?” He replied, “It is one of you twelve who is eating from this bowl with me.