John 3.3-6
…Except a man be born again, he cannot see the kingdom of God. Nicodemus said unto him, How can a man be born when he is old? Can he enter the second time into his mother’s womb, and be born? Jesus answered, verily , verily , I say unto thee except a man be born of water and of the Spirit he cannot enter the kingdom of God. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
Matthew 9.17
Neither do men put new wine into old wineskins, else the wineskins break, and the wine runs out, and the wineskin perish; but they put new wine into new wineskins, and both are preserved.
I know its not the orthodox interpretation, but I’ve always viewed these verses as being about reincarnation. I get the sense that Jesus is talking about individuals here…