When you are born again by the Spirit, you are Born through the washing of regeneration and renewing of the Holy Spirit
This is what Christ means for water and spirit, and it has nothing to do with being physically born of a woman as that is flesh and not spirit
Being born again is of the Spirit and not anything to do with this earth, it is a heavenly transformation, it is not water baptism done by a man. We are baptized by the Holy Spirit into His church
1 Corinthians 12:13
For by one Spirit we were all baptized into
one body—whether Jews or Greeks, whether slaves or free—and have all been made to drink into
one Spirit.
John 3
5 Jesus answered, “Most assuredly, I say to you, unless one is born of water and the Spirit, he cannot enter 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 Do not marvel that I said to you, ‘You must be born again.’ 8 The wind blows where it wishes, and you hear the sound of it, but cannot tell where it comes from and where it goes. So is everyone who is born of the Spirit.”
Titus 3
4 But when the kindness and the love of God our Savior toward man appeared, 5 not by works of righteousness which we have done, but according to His mercy He saved us, through the washing of regeneration and renewing of the Holy Spirit, 6 whom He poured out on us abundantly through Jesus Christ our Savior, 7 that having been justified by His grace we should become heirs according to the hope of eternal life.