Selene said:
Christ said that one must be born of "water AND spirit" together. That means water from above and spirit from above. Water baptism did not come from man. It came from God; therefore baptism by water means "from above."
Our Lord Jesus was speaking of flesh vs. spirit there in John 3. And that's also how Nicodemus understood about the flesh part, but not the part about being born from above of The Spirit.
It's important to learn to stay in the context of the Chapter as written, and not try to change it, which is what men's doctrines try to do.
John 3:1-12
1 There was a man of the Pharisees, named Nicodemus, a ruler of the Jews:
2 The same came to Jesus by night, and said unto him, "Rabbi, we know that Thou art a teacher come from God: for no man can do these miracles that Thou doest, except God be with him."
3 Jesus answered and said unto him, "Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God."
4 Nicodemus saith unto him, "
How can a man be born when he is old? can he enter the second time into his mother's womb, and be born?"
The subject of being born of water is about the water of woman's womb, not ritual water baptism.
5 Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.
6
That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
Christ revealed He was speaking of being born of the flesh and spirit, not ritual baptism and spirit. Other than that verse in bold it's simple to know that, because ritual baptism is linked with being born of The Spirit part; that's how some receive(d) The Holy Spirit baptism to their 'spirit'. So the contrast there is of being born in the flesh vs being born in The Spirit.
7 Marvel not that I said unto thee, Ye must be born again.
8 The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit.
Christ goes further with an example to contrast being born in the flesh through water of woman's womb vs. being born of The Spirit. With one's flesh, it's easy to see it coming and going, but not with The Spirit which is like the wind.
9 Nicodemus answered and said unto Him, "How can these things be?"
10 Jesus answered and said unto him, "Art thou a master of Israel, and knowest not these things?
11 Verily, verily, I say unto thee, We speak that we do know, and testify that we have seen; and ye receive not our witness.
12 If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you of heavenly things?
(KJV)
In v.12 our Lord is talking about being born of The Spirit part still.
Per The New Testament, not everyone received baptism of The Holy Spirit when they went through ritual water baptism. Some were even baptized of The Spirit BEFORE they were water baptized, which is another way to know our Lord Jesus was not specifically talking about ritual water baptism here. This is also why the NT contrasts the water baptism of John vs. baptism by The Holy Spirit by hearing The Gospel of Jesus Christ and believing on Him, which was not in effect with John's baptism until Christ appeared, was crucified and resurrected.