In John 3 we see Nicodemus visiting secretly with Jesus who says to him..."you must be born again" (from above) (by the will of the Father). Nicodemus is puzzled; he has never heard of such a thing. Yet Jesus presses him that he should know as he is a leader in Israel and well acquainted with the word. Why doesn't Nicodemus understand the need to be born of the Spirit in order to participate in the Israel of God?
So where is the new birth spoken of in the Scriptures?