Here is the thing. One actually has to be born from their mothers womb (water and blood) to be someone that actually exist in the flesh (earthly). (IE: water and blood). This is how Jesus came into the world through water and blood born of a virgin that He would be the word of God born of flesh.
Born again is different than born of water as Jesus said, Except a man be born again, he cannot see the kingdom of God. This is the Spiritual rebirth, born again, born from above of the Spirit.
We have to separate the born of water and born again of the Spirit as it's a Spiritual rebirth that has nothing to do with being baptized in water, but that one has to be born of water and blood first (flesh) and then be born again from above of the Spirit. This is why the word baptized is not in John 3:5-7.
Parentheses are my own:
John 3:5 Jesus answered, Verily, verily, I say unto thee, Except a man be (first) born of water (amniotic fluid and blood from the hymen) IE: flesh as this has to come first in order to exist as flesh/earthly as this is how Jesus had to come into the world..................... and of the Spirit, (being born from above by God's Spirit entering us) 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. 7 Marvel not that I said unto thee, Ye must be born again.
1 Corinthians 15:47 The first man is of the earth, earthy: the second man is the Lord from heaven. 48 As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly. 49 And as we have borne the image of the earthy, we shall also bear the image of the heavenly. 50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God;