Gospel according to John

Most assuredly I tell you, we speak that which we know, and testify of that which we have seen, and you don't receive our witness.

If I told you earthly things and you don't believe, how will you believe if I tell you heavenly things?

No one has ascended into heaven, but he who descended out of heaven, the Son of Man, who is in heaven.

As Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up,

that whoever believes in him should not perish, but have eternal life.