Origen
Catena Aurea · Johannesevangelium 8
Then answered the Jews, and said unto him, Say we not well that thou art a Samaritan, and hast a devil? Jesus answered, I have not a devil; but I honour my Father, and ye do dishonour me. And I seek not mine own glory; there is one that seeketh and judgeth. Verily, verily, I say unto you, If a man keep my saying, he shall never see death.
(tom. xx. s. 31.) We must understand Him, as it were, to say, If a man keep My light, he shall not see darkness for ever; for ever being taken as common to both clauses, as if the sentence were, If a man keep My saying for ever, He shall not see death for ever: meaning that a man does not see death, so long as he keeps Christ’s word. But when a man, by becoming sluggish in the observance of His words, and negligent in the keeping of his own heart, ceases to keep them, he then sees death; he brings it upon himself. Thus taught then by our Saviour, to the prophet who asks, What man is he that liveth, and shall not see death? (Ps. 88) we are able to answer, He who keepeth Christ’s word.