John 8:51

Truly I say to you, If a man keeps my word he will never see death.

John 11:25-26

Jesus said to her, I am myself that day and that life; he who has faith in me will have life even if he is dead;

Luke 2:26

And he had knowledge, through the Holy Spirit, that he would not see death till he had seen the Lord's Christ.

Psalm 89:48

What man now living will not see death? will he be able to keep back his soul from the underworld? (Selah.)

John 3:15-16

So that whoever has faith may have in him eternal life.

John 5:24

Truly I say to you, The man whose ears are open to my word and who has faith in him who sent me, has eternal life; he will not be judged, but has come from death into life.

John 8:55

You have no knowledge of him, but I have knowledge of him; and if I said I have no knowledge of him I would be talking falsely like you: but I have full knowledge of him, and I keep his word.

John 15:20

Keep in mind the words I said to you, A servant is not greater than his lord. If they were cruel to me, they will be cruel to you; if they kept my words, they will keep yours.

John 6:50

The bread which comes from heaven is such bread that a man may take it for food and never see death.

John 8:12

Then again Jesus said to them, I am the light of the world; he who comes with me will not be walking in the dark but will have the light of life.

Hebrews 11:5

By faith Enoch was taken up to heaven so that he did not see death; he was seen no longer, for God took him away: for before he was taken, witness had been given that he was well-pleasing to God:

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
So that whoever has faith may have in him eternal life.
John 5:24
Truly I say to you, The man whose ears are open to my word and who has faith in him who sent me, has eternal life; he will not be judged, but has come from death into life.
John 6:50
The bread which comes from heaven is such bread that a man may take it for food and never see death.
John 11:25
Jesus said to her, I am myself that day and that life; he who has faith in me will have life even if he is dead;

Keep

John 8:55
You have no knowledge of him, but I have knowledge of him; and if I said I have no knowledge of him I would be talking falsely like you: but I have full knowledge of him, and I keep his word.
John 15:20
Keep in mind the words I said to you, A servant is not greater than his lord. If they were cruel to me, they will be cruel to you; if they kept my words, they will keep yours.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain