Yahushua answered him, I assure you, most solemnly I tell you, that unless a person is born again (anew, from above), he cannot ever see (know, be acquainted with, and experience) the kingdom of God.
Nicodemus said to Him, How can a man be born when he is old? Can he enter his mother’s womb again and be born?
Yahushua answered, I assure you, most solemnly I tell you, unless a man is born of water and [even] the Spirit, he cannot [ever] enter the kingdom of God. [Eze 36:25-27]
What is born of [from] the flesh is flesh [of the physical is physical]; and what is born of the Spirit is spirit.
Marvel not [do not be surprised, astonished] at My telling you, You must all be born anew (from above).
The wind blows (breathes) where it wills; and though you hear its sound, yet you neither know where it comes from nor where it is going. So it is with everyone who is born of the Spirit.
Nicodemus answered by asking, How can all this be possible?
Yahushua replied, Are you the teacher of Israel, and yet do not know nor understand these things? [Are they strange to you?]
I assure you, most solemnly I tell you, We speak only of what we know [we know absolutely what we are talking about]; we have actually seen what we are testifying to [we were eyewitnesses of it]. And still you do not receive our testimony [you reject and refuse our evidence–that of Myself and of all those who are born of the Spirit].
If I have told you of things that happen right here on the earth and yet none of you believes Me, how can you believe (trust Me, adhere to Me, rely on Me) if I tell you of heavenly things?
And yet no one has ever gone up to heaven, but there is One Who has come down from heaven–the Son of Man [Himself], Who is (dwells, has His home) in heaven.
And just as Moses lifted up the serpent in the desert [on a pole], so must [so it is necessary that] the Son of Man be lifted up [on the cross], [Num 21:9] In order that everyone who believes in Him [who cleaves to Him, trusts Him, and relies on Him] may not perish, but have eternal life and [actually] live forever!
For God so greatly loved and dearly prized the world that He [even] gave up His only begotten (unique) Son, so that whoever believes in (trusts in, clings to, relies on) Him shall not perish (come to destruction, be lost) but have eternal (everlasting) life.