Would the non believer be a member of this family?
John 3:18 He who believes in Him is not condemned; but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God.
"You MUST be born again" -Jesus NOT you "must" be enlightened intellectually..
The belief Jesus is telling us we must have is not intellectual enlightenment you are referring to.
Luke 18:17 Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it.
Many people belive in synthetic Gods and Demi-Gods.. That takes belief (sophistry and semantics).. It don't take much believing to believe in your Father(of the family).. Because he sired you.. you cannot disbelieve in him.. Synthetic Gods require much belief.. OH! and clergy..
[ Luke 18:17 Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it. ]
Little children are most prone to dream and create imaginary conditions.. Oh! and play church.. This comment was said after the Apostles argued among themselves who would be greatest in heaven.. Jesus took a little child and said this.. Yes Jesus was mocking belief.. I think you got it..
Why do ye not understand my speech? [even] because ye cannot hear my word. – John 8:43
No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day. – John 6:44