Opinions are cheap. If your opinion is that water refers to womb, stick to it.
I know I'm coming in late in this conversation, but if Jesus said you have to be born AGAIN.. and you've already been born NATURALLY once .. so the AGAIN would be spiritually; WHAT ELSE COULD THAT MEAN?
You're born once, naturally, and 'again' spiritually.
It can't be baptism,can it? Jesus and John the Baptist both preached belief, repentence, THEN baptism. Therefore you would have been "born again" (spiritually) before you are baptised,right?
Opinions are cheap, but the proof lies in the scripture.
The third and clearly contextual position is that the water here is a reference to physical birth. Any parent knows tht a baby is born in a sack of water (amniotic fluid) which breaks just prior to delivery....The immediate context following clearly contrasts physical birth from spiritual birth....(Understanding the Bible, David Sorenson, Northstar Ministries, 2005)
What Christ is not referring to is water Baptism, which never saved anyone (1Pet.3:21)