Being born again means born from "above"
Again Greek 509 anothen- from the first, from above, again, from the beginning.
This lines up with John 3:13
John 3:13 "And no man hath ascended up to heaven, but He That came down from heaven, even the Son of man Which is in heaven."
Oh yes!!!
Let's look at the imminent theme that John is writing about...
John 1:12 is definitely about this theme.
Also I would say that Jesus doesn't really have linear conversation recorded...always Jesus is one step ahead of those he talks with.
Anyone that becomes familiar with Israel and the cultural norms of that period (some ongoing into today)
We see that Nicodemus is coming to Jesus during the social hour... daylight is for working but nights are for meeting friends. (Listening to Bon Jovi being played on the Sea of Gallilee at night is rather disconcerting)
Nicodemus instantly praises and heralds Jesus' ministry. (Not an unbeliever)
Now if I were to tell you that the Jews classified everything and everyone because they were a caste based society...no one really argues... until I mention that "Born from Above" is yet another classification of heaven sent messengers... like Sampson, Samuel, Isaac, and Jacob. Guys sent by God to perform particular tasks for all of Israel.
Also...what about the prophecy "He came into his own and his own accepted him not"
Meaning that most Jews were not going to be saved. True believers were going to be rare.
And that tradition plays a heavy part of all translations... even if those translations are wrong. Tyndale was one of the earliest translators and much of his work was based upon the work of others... doing the best they could, but hey, what's one word when you are fighting about divorce and remarriage? And by the time the Cambridge/Oxford edition of the King James Bible the damage had already been done by the Geneva Bible...there wasn't any changing it now...it would be declared a heresy.
Now with the new marketing campaigns in the late '60's and 70's for such things as Billy Graham crusades...it never was gonna stop.