Origen

“ Will Celsus and his friends now say that those proofs which show that the apostasy of Judas was not a complete apostasy, even after his attempts against his Master, are inventions, and that this alone is true, viz., that one of His disciples betrayed Him; and will they add to the Scriptural account that he betrayed Him also with his whole heart? To act in this spirit of hostility with the same writings, both as to what we are to believe and what we are not to believe, is absurd. ”

“ Nor did he trouble himself to take note of all that is related concerning Judas; how this Judas, having come to entertain opposite and conflicting opinions regarding his Master neither opposed Him with his whole soul, nor yet with his whole soul preserved the respect due by a pupil to his teacher. For he that betrayed Him gave to the multitude that came to apprehend Jesus, a sign, saying, “Whomsoever I shall kiss, it is he ”