John 6:69-71

Young's Literal Translation

⁶⁹ and we have believed, and we have known, that thou art the Christ, the Son of the living God.'

⁷⁰ Jesus answered them, `Did not I choose you -- the twelve? and of you -- one is a devil.

⁷¹ And he spake of Judas, Simon's [son], Iscariot, for he was about to deliver him up, being one of the twelve.