Who never died in the Bible? I know Jesus is risen and that whole story, but when I was much younger I remember hearing about some people who never actually died in the Bible. Who are these people and how did they leave this world?
Enoch and Elijah are the two that fit this category. 


  When Enoch had lived 65 years, he fathered Methuselah. Enoch
  walked with God after he fathered Methuselah 300 years and had
  other sons and daughters. Thus all the days of Enoch were 365 years.
  Enoch walked with God, and he was not, for God took him.  Genesis 5:21-24 ESV
  
  And as they still went on and talked, behold, chariots of fire and
  horses of fire separated the two of them. And Elijah went up by a
  whirlwind into heaven.  2 Kings 2:11 ESV


Some have speculated that Moses also fits into this category, but that doesn't fit with this verse:


  Moses was 120 years old when he died. His eye was undimmed, and his
  vigor unabated.  Deuteronomy 34:7 ESV


The idea that Moses could have been in that category probably comes from the record that Moses and Elijah appeared to Jesus on the Mount of Transfiguration.


  And he was transfigured before them, and his face shone like the sun,
  and his clothes became white as light. And behold, there appeared to
  them Moses and Elijah, talking with him.   Matthew 17:2-3 ESV


So, Enoch and Elijah are the two that meet this criterion.

As an aside, Lazarus and a few others died twice, so the death rate of all people who have ever lived is actually slightly greater than 100%.  :)

It should also be noted that according to 1 Thessalonians, there are still some people who will not experience physical death, but will enter eternity prior to death.  This is yet future, though.  (Asleep is thought to be a euphemism for physical death)


  But we do not want you to be uninformed, brothers, about those who are
  asleep, that you may not grieve as others do who have no hope. For
  since we believe that Jesus died and rose again, even so, through
  Jesus, God will bring with him those who have fallen asleep. For this
  we declare to you by a word from the Lord,[d] that we who are alive,
  who are left until the coming of the Lord, will not precede those who
  have fallen asleep. For the Lord himself will descend from heaven with
  a cry of command, with the voice of an archangel, and with the sound
  of the trumpet of God. And the dead in Christ will rise first. Then we
  who are alive, who are left, will be caught up together with them in
  the clouds to meet the Lord in the air, and so we will always be with
  the Lord. Therefore encourage one another with these words.  1
  Thessalonians 4:13-18 ESV