John 13:21-27

²¹ After saying this Jesus was troubled in spirit and declared, “Very truly, I tell you, one of you will betray me.” ²² The disciples looked at one another, uncertain of whom he was speaking. ²³ One of his disciples—the one whom Jesus loved—was reclining close to his heart; ²⁴ Simon Peter therefore motioned to him to ask Jesus of whom he was speaking. ²⁵ So while reclining next to Jesus, he asked him, “Lord, who is it?” ²⁶ Jesus answered, “It is the one to whom I give this piece of bread when I have dipped it in the dish.” So when he had dipped the piece of bread, he gave it to Judas son of Simon Iscariot. ²⁷ After he received the piece of bread, Satan entered into him. Jesus said to him, “Do quickly what you are going to do.” (New Revised Standard Version)