CALVIN ON REGENRATION FROM HIS COMMENTARY ON JOHN
The will of the flesh and the will of man appear to me to mean the same thing; for I see no reason why flesh should be supposed to signify woman, as Augustine and many others explain it. On the contrary, the Evangelist repeats the same thing in a variety of words, in order to explain it more fully, and impress it more deeply on the minds of men. Though he refers directly to the Jews, who gloried in the flesh, yet from this passage a general doctrine may be obtained: that our being reckoned the sons of God does not belong to our nature, and does not proceed from us, but because God begat us willingly, (James 1:18,) that is, from undeserved love. Hence it follows, first, that faith does not proceed from ourselves, but is the fruit of spiritual regeneration; for the Evangelist affirms that no man can believe, unless he be begotten of God; and therefore faith is a heavenly gift. It follows, secondly, that faith is not bare or cold knowledge, since no man can believe who has not been renewed by the Spirit of God.