The Rev. Paul T. McCain over at the CyberBrethren blog succinctly summarized the Christian life in the words of Martin Luther.
Because you have taken hold of Christ by faith, through whom you are righteous, you should now go and love God and your neighbor. Call upon God, give thanks to Him, preach Him, praise Him, confess Him. Do good to your neighbor, and serve him; do your duty. These are truly good works, which flow from this faith and joy conceived in the heart because we have the forgiveness of sins freely through Christ.
No longer must we worry about appeasing God. We have His favor in the sacrifice of Christ. His promises are sure and certain. There is no more fear of sin, death, or the devil. So now we are free to do good works for our neighbor.