John 8:51

Truly, truly, I say to you, if any man keeps my word, he will, no, not see death, into the age.

John 11:25-26

Jesus said to her, I am the resurrection and the life. He who believes in me, even though he died, he will live.

Luke 2:26

And it was divinely revealed to him by the Holy Spirit, that he would not see death before he would see the Christ of Lord.

Psalm 89:48

What man is he who shall live and not see death, who shall deliver his soul from the power of Sheol? Selah.

John 3:15-16

so that every man who believes in him would not perish, but may have eternal life.

John 5:24

Truly, truly, I say to you, that he who hears my word, and believes him who sent me, has eternal life. And he does not come into condemnation, but has passed from death into life.

John 8:55

And ye do not know him, but I know him. And if I should say that I do not know him, I will be a liar like you, but I do know him and keep his word.

John 15:20

Remember the word that I said to you, A bondman is not greater than his lord. If they persecuted me, they will persecute you also. If they kept my word, they will keep yours also.

John 6:50

This is the bread that comes down out of heaven, that a man may eat of it, and not die.

John 8:12

Again therefore Jesus spoke to them, saying, I am the light of the world. He who follows me would, no, not walk in the darkness, but will have the light of life.

Hebrews 11:5

By faith Enoch was transferred to not see death, and he was not found, because God transferred him. For before his removal he was reported to be 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 every man who believes in him would not perish, but may have eternal life.
John 5:24
Truly, truly, I say to you, that he who hears my word, and believes him who sent me, has eternal life. And he does not come into condemnation, but has passed from death into life.
John 6:50
This is the bread that comes down out of heaven, that a man may eat of it, and not die.
John 11:25
Jesus said to her, I am the resurrection and the life. He who believes in me, even though he died, he will live.

Keep

John 8:55
And ye do not know him, but I know him. And if I should say that I do not know him, I will be a liar like you, but I do know him and keep his word.
John 15:20
Remember the word that I said to you, A bondman is not greater than his lord. If they persecuted me, they will persecute you also. If they kept my word, they will keep yours also.