The supernatural Baptism of the Holy Spirit, just as the Bible describes it, is real. It is something God administers through Jesus Christ. The verse below is key to why some know Heaven and others don't even believe that Heaven or God exist.
"There was a man of the Pharisees, named Nicodemus, a ruler of the Jews:
The same came to Jesus by night, and said unto him, Rabbi, we know that thou art a teacher come from God: for no man can do these miracles that thou doest, except God be with him.
Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God.
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?
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. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit. Marvel not that I said unto thee, Ye must be born again." John 3: 1-7