John 6:71 in the King James Version
He spake of Judas Iscariot the son of Simon: for he it was that should betray him, being one of the twelve.
Context
70 Jesus answered them, “Didn’t I choose you, the twelve, and one of you is a devil?”
71 Now he spoke of Judas, the son of Simon Iscariot, for it was he who would betray him, being one of the twelve.