You should know better than to say, "Today or tomorrow we will go to the city. We will do business there for a year and make a lot of money!" What do you know about tomorrow? How can you be so sure about your life? It is nothing more than mist that appears for only a little while before it disappears. You should say, "If the Lord lets us live, we will do these things." Yet you are stupid enough to brag, and it is wrong to be so proud. If you don't do what you know is right, you have sinned.