“Nicodemus said to Him, “How can a man be born when he is old? Can he enter a second time into his mother’s womb and be born?”” (John 3:4)
Why would Nick react this way to "born from above"? What does that have to do with his mother birthing him all over again? It is because Jesus said you must be born again.
Once again, from post #8:
"Nicodemus's non-enlightenment should not affect the correct rendering of Christ's intent with the word 'anothen' here. Anothen ( from above, from a higher place, of things which come from heaven or God, from the first, from the beginning, from the very first, anew, over again) can mean 'anew' or 'over again', but that's not what Christ meant, thus His further explanation in the next verse:
5 Jesus answered, `Verily, verily, I say to thee, If any one may not be born of water, and the Spirit, he is not able to enter into the reign of God;
6 that which hath been born of the flesh is flesh, and that which hath been born of the Spirit is spirit. Jn 1 YLT
Christ wasn't speaking of an earthly physical birth which Nicodemus wrongly perceived, He was speaking of a spiritual birth FROM ABOVE...."