Thinking about all of the injustices in the world can be frightening. There are so many people hurting and it is easy to get caught up in the worry and negativity. God reassures us through the Psalms that there is no reason to worry because God is in control. He has a master plan and that reassurance of his overseeing our lives is comforting to us. Don't worry about the sinfulness of earth when there is the perfectness of heaven awaiting us.