3 Res, That is quite a plausible explanation (translating kai for 'even' rather than 'and'), but after looking over several translations, I do not find any with that rendering. Can you give us a translation that renders kai as even?
All but one translation that I can find renders this word "KAI" as "AND". The one that doesn't do this translates John 3:5 as "...except a man be renewed by
the spiritual baptism, he cannot enter into the kingdom of God."
Two of the commentaries openly reject Calvin's interpretation of this as "...by water which IS the Spirit". So apparently Calvin and I are in agreement on this point that
water IS the Spirit in this John 3:5 context. It matches Christ's own language in John 7:38-39 where Christ spoke of the rivers of
living water being the Spirit flowing out of a converted person.
When I see virtually all the translations choosing to interpret "KAI" as "AND" instead of "EVEN" or "NAMELY" when both are possible options, it makes me wonder what compelled them to make that choice. Perhaps pressure from those funding the translating committees? A wish not to rock the boat of the institutional church's traditional baptism practices? An instinctive wish to have some human input in achieving a salvation status? Fear of Mother Church? Simple repetition of their own religious training? None of these would be good reasons for choosing to translate this "KAI" term incorrectly, if there are scriptures that show us salvation is God's handiwork and not ours.
In regards to "water."
Christ is referring to Baptism.
Born, as in born again, with the water baptism.
As for the word "even," you are barking up the wrong tree.
Baptism is a word that doesn't even appear in this John 3:5 context. Water, yes. Baptism, no.
If you consider that I am "barking up the wrong tree", then it appears that you acknowledge that there
is more than one possible "tree" that could be chosen in this case: the
"AND" tree, or the
"EVEN" tree. I choose the
"EVEN" tree, because it does not conflict with the rest of scripture that tells us that salvation is
"Not by works of righteousness which we have done, but according to His mercy He saved us,
by the washing of regeneration, and renewing of the Holy Ghost". No baptism anywhere in this - just the washing of the regenerating and renewing influence of the Holy Ghost at work on the individual.
Is baptism considered a "work of righteousness"? Sure it is. Then according to this verse above, that means baptism is NOT included in how salvation is achieved.