This past Sunday, I spoke at the Keller campus. We looked at the nation of Israel during the days of Amos the prophet. God has shed his grace on those people but instead of being a blessing to the rest of the world, they were oppressing the poor and buying and selling them as slaves. We can do the same thing when we refuse to allow God's grace to flow through us to those who need it most.
I quoted the lyrics to a song by Sawyer Brown. Let me encourage you to watch the video and let it encourage you to not waste the grace God has given you.
http://new.music.yahoo.com/videos/--20458078