Romans 4:5
To him who does not work but believes on Him who justifies the ungodly, his faith is accounted for righteousness.

We cannot do enough good deeds and make ourselves righteous. The only way to be made righteous is believing Jesus died for our sins and excepting Him in our hearts. This world is full of people who are still trying to climb the ladder of works. When we share Jesus with others we are showing people how to get off the ladder and believe and be made righteous.