11 “Truly I tell you,ab we speak what we know and we testify to what we have seen, but you do not accept our testimony. 12  If I have told you about earthly things and you don’t believe, how will you believe if I tell you about heavenly things? 13 No one has ascendedac into heavenad except the one who descended from heavenae—the Son of Man.E,af

14 “Just as Mosesag lifted up the snake in the wilderness,ah so the Son of Man must be lifted up, 15 so that everyone who believes in him mayF have eternal life.ai