Jesus answered, "Most assuredly I tell you, unless one is born of water and spirit, he can't enter into the Kingdom of God!
Accordingly, he employed the words Spirit and water to mean the same thing, and this ought not to be regarded as a harsh or forced interpretation; for it is a frequent and common way of speaking in Scripture, when the Spirit is mentioned, to add the word Water or Fire, expressing his power. We sometimes meet with the statement, that it is Christ who baptizeth with the Holy Ghost and with fire, (Matthew 3:11; Luke 3:16,) where fire means nothing different from the Spirit, but only shows what is his efficacy in us. As to the word water being placed first, it is of little consequence; or rather, this mode of speaking flows more naturally than the other, because the metaphor is followed by a plain and direct statement, as if Christ had said that no man is a son of God until he has been renewed by water, and that this water is the Spirit who cleanseth us anew and who, by spreading his energy over us, imparts to us the rigor of the heavenly life, though by nature we are utterly dry. And most properly does Christ, in order to reprove Nicodemus for his ignorance, employ a form of expression which is common in Scripture; for Nicodemus ought at length to have acknowledged, that what Christ had said was taken from the ordinary doctrine of the Prophets. 