For God so loved the world that he gave his only Son,
so that everyone who believes in him might not perish
but might have eternal life.
For God did not send his Son into the world to condemn the world,
but that the world might be saved through him.
Whoever believes in him will not be condemned,
but whoever does not believe has already been condemned,
because he has not believed in the name of the only Son of God.
Perhaps the best known passage in Scripture (flashed at sports games by some rainbow haired men), this passage from today's Gospel tells us how much God loves us. The account of Nicodemus' encounter of Christ is the beginning of Jesus's proclamation of His purpose and ultimate message - salvation and God's love. Nicodemus came hidden in the darkness, but Jesus Christ, the light of the world, reveals the truth to him. God loves the world so much that He sent His Son, the second Person of the Trinity, to save it. But this salvation is not automatic - some may prefer the darkness of sins. Those who believe are not condemned, but their works have to show their belief, living the truth in the light, and our works done in God. There is a tender balance here - between the love of God and our human wills, and between presumption of salvation and forgiveness of sins. Just because God loves us does not mean we can sin with no consequences assuming God will simply save us.
God's love saves us, but we must respond to that love by living our vocations - that call of love in our lives.