John 8:51

verily, verily, I say to you, If any one may keep my word, death he may not see -- to the age.'

John 11:25-26

Jesus said to her, 'I am the rising again, and the life; he who is believing in me, even if he may die, shall live;

Luke 2:26

and it hath been divinely told him by the Holy Spirit -- not to see death before he may see the Christ of the Lord.

Psalm 89:48

Who is the man that liveth, and doth not see death? He delivereth his soul from the hand of Sheol. Selah.

John 3:15-16

that every one who is believing in him may not perish, but may have life age-during,

John 5:24

Verily, verily, I say to you -- He who is hearing my word, and is believing Him who sent me, hath life age-during, and to judgment he doth not come, but hath passed out of the death to the life.

John 8:55

and ye have not known Him, and I have known Him, and if I say that I have not known Him, I shall be like you -- speaking falsely; but I have known Him, and His word I keep;

John 15:20

'Remember the word that I said to you, A servant is not greater than his lord; if me they did persecute, you also they will persecute; if my word they did keep, yours also they will keep;

John 6:50

this is the bread that out of the heaven is coming down, that any one may eat of it, and not die.

John 8:12

Again, therefore, Jesus spake to them, saying, 'I am the light of the world; he who is following me shall not walk in the darkness, but he shall have the light of the life.'

Hebrews 11:5

By faith Enoch was translated -- not to see death, and was not found, because God did translate him; for before his translation he had been testified to -- that he had pleased God well,

Treasury of Scripture Knowledge

Summary

Verily, verily, I say unto you, If a man keep my saying, he shall never see death.

Bible References

If

John 3:15
that every one who is believing in him may not perish, but may have life age-during,
John 5:24
Verily, verily, I say to you -- He who is hearing my word, and is believing Him who sent me, hath life age-during, and to judgment he doth not come, but hath passed out of the death to the life.
John 6:50
this is the bread that out of the heaven is coming down, that any one may eat of it, and not die.
John 11:25
Jesus said to her, 'I am the rising again, and the life; he who is believing in me, even if he may die, shall live;

Keep

John 8:55
and ye have not known Him, and I have known Him, and if I say that I have not known Him, I shall be like you -- speaking falsely; but I have known Him, and His word I keep;
John 15:20
'Remember the word that I said to you, A servant is not greater than his lord; if me they did persecute, you also they will persecute; if my word they did keep, yours also they will keep;