That which is born of the flesh is (g) flesh; and that which is born of the Spirit is spirit.
(g) That is, fleshly, namely, wholly unclean and under the wrath of God: and therefore this word "flesh" signifies the corrupt nature of man: contrary to which is the Spirit, that is, the man ingrafted into Christ through the grace of the Holy Spirit, whose nature is everlasting and immortal, though the strife of the flesh remains.