Jesus answered,
Verily, verily, I say unto you, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.
All Commentaries on John 3:5 Go To John 3
Tertullian of Carthage
AD 220
Besides, he had certainly not forgotten what the Lord had so definitively stated: "Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God; ".
When, however, the prescript is laid down that "without baptism, salvation is attainable by none "(chiefly on the ground of that declaration of the Lord, who says, "Unless one be born of water, he hath not life"