When privately meeting with Nicodemus, Jesus Christ shared some of the greatest truths ever uttered by man. One of them was:
John 3:13-15:
And no man hath ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven.
And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
That whosoever believeth in him should not perish, but have eternal life.