@Seabreeze, you speak like christendom
"Jesus answered him, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God.” In other words, you cannot be a Christian without being "born again" with a new spirit."
That is not what it means.
Israelites were born into the old covenant.
Jesus told him that they would have to be 'born' into a new covenant, 'born again' to get into the kingdom. The new birth would be by water and spirit, baptism by water and anointed by holy spirit would get them the new birth.
The only ones that are born again are the Jews of Jesus' day who could be of the overlapping covenants.