John 3:6-8

That which is born of the flesh is flesh [the physical is merely physical], and that which is born of the Spirit is spirit. Do not be surprised that I have told you, ‘You must be born again [reborn from above—spiritually transformed, renewed, sanctified].’ The wind blows where it wishes and you hear its sound, but you do not know where it is coming from and where it is going; so it is with everyone who is born of the Spirit.”