John 6:67-71

So Jesus said to his twelve, “And you—do you also want to leave?” Peter spoke up and said, “But Lord, where would we go? No one but you gives us the revelation of eternal life. We’re fully convinced that you are the Anointed One, the Son of the Living God, and we believe in you!” Then Jesus shocked them with these words: “I have hand-picked you to be my twelve, knowing that one of you is the devil.” Jesus was referring to Judas Iscariot, son of Simon, for he knew that Judas, one of his chosen disciples, was getting ready to betray him.