From Numbers 21, we see the punishment for rebellion against God. We also see God in his mercy providing a way of redemption: a bronze snake. A replica of the poisonous snake, all the bitten who looked on it lived. We see then from John 3 that Jesus too has been made sin for us – he is a replica of our sinfulness, bearing it all. Those who look to him – who believe in Jesus – are saved; those who don’t are not. Why? Because people loved the darkness more than the light; so many prefer to die rather than to trust in God’s Son.