John 6:71 YLT

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.