Sure I do. I once knew it all from the Church’s point of view, and then I was born again.
Being born again is in the Gospel is several different forms, not only John 3. The verses about putting new wine into old bottles, or patching an old garment with new cloth, for instance.
Possibly you can’t see it unless you are born again, which makes it impossible except that other verses tell you to ask and you will receive.
It’s essential, and quite traumatic for some when their eyes are opened all at once to God’s sanctifying gift.
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Born again means only the conversion to an incorruptible body. (thus the ability to travel invisibly through the material universe as stated in John 3)
This conversion is salvation, and without it we would be burned up when the material universe is destroyed “for no place was found for it.”
Nobody is guaranteed anything until they have endured in covenant, as Yeshua stated in Matthew 7, to their end.
We are born again at Baptism, again at Confirmation, and yearly at the renewal of vows. Anything else is parsing.