Who can boast? No one, absolutely no one. How can you boast when everyone receives the gift of grace without any merit on his part? This means that any ground for self-righteousness is done away with, and this is why the ugliest sin among Christians is self-righteousness. When we begin to look down on people who are involved in homosexuality, or greed, or gambling, or whatever — when we begin to think that we are better than they are — then we have denied what God has done for us. All boasting must be excluded. There are no grounds for anybody to say, Well, at least I've never done that. The only ground of acceptance is the gift of grace.