Read the facts: John 3:3-7
3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be aborn bagain, he cannot see the kingdom of God.
4 Nicodemus saith 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?
5 Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.
6 That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
7 Marvel not that I said unto thee, Ye must be aborn again.
Yeah, you're right. You shouldn't laugh at what you don't know. You can read in the New Testament of Jesus going to another area before ascending into heaven where he taught those that he saw to show that the Messiah had come. He then appointed people as teachers to go to those who wouldn't see him.
H-D