Verily, verily, I say unto you, If a man keeps my saying, he shall never see death.
Read Chapter 8
Cyril of Alexandria
AD 444
He shews that it is superfluous to array long defences against those who are wont to delight in blaming; for He bends Himself to what was necessary, I mean the calling through faith unto eternal life, and all but bidding farewell to those who had through their unlearning grieved Him, He kneads up His own discourse with a sort of art. For having before said of God, He that is of God heareth God's words, He immediately says, If a man keep My word, shewing that He is by Nature God and hence teaching that no further reach of impiety yet remains to the Jews when they have said that He hath a devil Who giveth eternal Life to those who will keep His word. For will He not be known by this too to be God by Nature? for to what other will pertain the being able to quicken for ever them who hear His words, save to Him Who is God by Nature?
The Divine word is kept, when a man does not transgress the Divine Commandment but is instant and does without delay that which is bidden and is in no wise a...
He shall not see death, he shall not die, for ever. That is, he shall not incur an eternal death, as they who die in sin: but they understood his words of the death of the body. (Witham)
You accuse me of being possessed with a devil, because I preach to you a doctrine far different from what you are accustomed to hear; but I speak nothing but the truth; I give honour to my Father, I execute his orders; and the words I now speak to you, are the words of eternal life. Whoever observes them shall not die. Moses promised a long life to those who observed what was commanded in the old law, and offered them as their reward goods and temporal prosperity. But I now offer you an eternal life. Believe my words, keep them, and observe my ordinances, and you shall not feel the death of the soul, the second, eternal, and most miserable of deaths. (Calmet)
Here He speaks not of faith only, but of a pure life. Above He said, shall have everlasting life, but here, shall not see death. John 6:40 At the same time He hints to them that they could do nothing against Him, for if the man that should keep His saying should not die, much less should He Himself. At least they understood it so, and said to Him,