12If, when I tell you earthly things, you do not believe me, how will you believe me when I tell you of heavenly things?
13No one has ascended to heaven, except him who descended from heaven — the Son of Man himself.
14And, as Moses lifted up the snake in the desert, so must the Son of Man be lifted up;
15so that everyone who believes in him may have eternal life.”
16For God so loved the world, that he gave his only Son, so that everyone who believes in him may not be lost, but have eternal life.
17For God did not send his Son into the world to condemn the world, but so that the world might be saved through him.
John 3
John 3:12-17