Finally Alive by John Piper
When Jesus said to Nicodemus, 'You must be born again', the devout and learned religious leader was unsure what Jesus meant. It would seem nothing has changed. Today 'born again Christians' fill churches that are seen as ineffectual at best, and even characterised by the 'mosaic' generation as 'unchristian'.
The term 'born again' has been devalued both in society and in the church. Those claiming to be 'born again' live lives that are indistinguishable from those who don't; they sin the same, embrace injustice the same, covet the same, do almost everything the same.
Being 'born again' is now defined by what people say they believe. The New Testament however defines Christians very differently.
"When Jesus said to Nicodemus, "You must be born again" (John 3:7), he was not sharing interesting and unimportant information. He was leading him to eternal life... If he does that for you (or if he already has), then you are (or you will be) truly, invincibly, finally alive." John Piper