That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
All Commentaries on John 3:6 Go To John 3
Cyril of Alexandria
AD 444
By another argument again He persuades him to mount up to a higher understanding, and on hearing of spiritual birth, not to think of the properties of bodies. For as it is altogether necessary, saith He, that the offspring of flesh should be flesh, so also is it that those of the Spirit should be spirit. For in things the mode of whose being is different, in these must surely the mode of generation also be not the same. But it is to be known that we call the spirit of a man the offspring of the Spirit, not as being of It by Nature (for that were impossible), but in the first place, and that in order of time, because that through Him that which was not was called into being, and in the second place and oeconomically, because of its being re-formed unto God through Him, He stamping His Own Impress upon us, and trans-fashioning our understanding to His own Quality, so to speak. For so I deem, you will understand aright that too which is said to some by Paul, My little children, of whom I travail in birth again until Christ be formed in you, and again, For in Christ Jesus I have begotten you through the Gospel.
