If
John 3:15
That whosoever believeth in him should not perish, but have eternal life.
John 3:16
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
John 5:24
Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
John 6:50
This is the bread which cometh down from heaven, that a man may eat thereof, and not die.
John 11:25
Jesus said unto her, I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live:
John 11:26
And whosoever liveth and believeth in me shall never die. Believest thou this?
keep
John 8:55
Yet ye have not known him; but I know him: and if I should say, I know him not, I shall be a liar like unto you: but I know him, and keep his saying.
John 15:20
Remember the word that I said unto you, The servant is not greater than his lord. If they have persecuted me, they will also persecute you; if they have kept my saying, they will keep yours also.
see
John 8:12
Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.
Psalm 89:48
What man is he that liveth, and shall not see death? shall he deliver his soul from the hand of the grave? Selah.
Luke 2:26
And it was revealed unto him by the Holy Ghost, that he should not see death, before he had seen the Lord's Christ.