The gospel of Mark (9:38-48) warns us not to compare ourselves to other people because Jesus is the only standard measure. If somebody is worse than me, it is his business, not mine. My business is to be like Jesus. The worst evil, however, is the sin of scandal, because it kills ourselves and somebody else. It is a stumbling block for all. When we give bad example we cannot imagine how much damage we cause to others for a lifetime.