What does "their worm and their thirst will never be quenched" mean?
In John 3, Jesus is discussing the new birth with Nicodemus, and is "amazed" (my quotes) at the fact that Nicodemus did not understand this- He says in verse 10,"you are Israel's teacher and you do not understand these things." Where in the Old Testament is the new birth described in such detail that Jesus could have assumed Nicodemus should know about it?
