Jesus answered, "Most assuredly I tell you, unless one is born of water and spirit, he can't enter into the Kingdom of God!
Another view proposed by many scholars is that "water" is an allusion to the amniotic fluid in which a fetus develops in its mother’s womb. Other scholars see it as a euphemistic reference to the semen without which natural birth is impossible. In either case "water" refers to physical or natural birth while "spirit" refers to spiritual or supernatural birth. [Note: E.g., Wiersbe, 1:295.] They claim that Jesus was saying that natural birth is not enough. One must also experience supernatural birth to enter the kingdom. However this use of "water" is unique in Scripture. Moreover it assumes that two births are in view whereas the construction of the Greek phrase favors one birth rather than two. If two were in view, there would normally be a repetition of the preposition before the second noun.