Jesus answered, "Most assuredly I tell you, unless one is born of water and spirit, he can't enter into the Kingdom of God!
In the study of this passage, it should be remembered that it is only quite recently in Christian times that interpretations of this verse have been devised to exclude its obvious reference to Christian baptism.  John Boys, Dean of Canterbury, renowned preacher and scholar of the Church of England in the 17th century, wrote as follows: