1 Timothy 1:15-16

What's interesting is that Paul refers to himself as the worst sinner. He persecuted and murdered Christians; you can't get much worse than that. However, even though he was the foremost of sinners, Jesus Christ came into the world to save him. Paul was not heading in that direction and the only explanation for the change is God. Sometimes we may feel unworthy to come to God, but it's not as if you're too dirty to come to him. We can look at Paul and see that there are some who are much worse. Now, the point isn't to make yourself out to be a "good person" with respect to others. We are all bad people. However, what I mean to say is that we shouldn't need to clean ourselves up before we come before God. Rather, going to God is the bath that is required. It's not what we do, but it's about what he does. Our coming to him saves us, but it's not about us. When we are saved he gets praise and we should praise him for the great love with which he loved us.