John 3:12
King James Version
“If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you heavenly things?”
Context
9Nicodemus answered and said unto him, How can these things be?
10Jesus answered and said unto him, Art thou a master of Israel, and knowest not these things?
11Verily, verily, I say unto thee, We speak that we do know, and testify that we have seen; and ye receive not our witness.
12If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you heavenly things?
13And no man hath ascended up to heaven, but he that came down from heaven, the Son of man which is in heaven.
14And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
15That whosoever believeth in him should not perish, but have eternal life.