John 3:9-13

9Nicodemus answered and said unto him, How can these things be?

10Jesus answered and said unto him, Art thou the teacher of Israel, and understandest not these things?

11Verily, verily, I say unto thee, We speak that which we know, and bear witness of that which we have seen; and ye receive not our witness.

12If I told you earthly things and ye believe not, how shall ye believe if I tell you heavenly things?

13And no one hath ascended into heaven, but he that descended out of heaven, even the Son of man, who is in heaven.