Jesus said: “God so loved the world that he gave his only Son, so that everyone who has faith in him will have eternal life and never really die. God did not send his Son into the world to condemn its people. He sent him to save them. No one who has faith in God’s Son will be condemned. But everyone who doesn’t have faith in him has already been condemned for not having faith in God’s only Son.
The light has come into the World, and people who do evil things are judged guilty because they love the dark more than the light.
People who do evil hate the light and won’t come to the light, because it clearly shows what they have done. But everyone who lives by the truth will come to the light.”

John 3:16 is one of the most familiar and beloved verses in the entire bible. Jesus explains the requirement for eternal life: faith in Him. He is the Light that has come into the World.