13 Come on now!—you people who say, "Either today or tomorrow we'll go to such-and-such a city, spend a year in business there, and make a profit." 14 You have no idea what will happen tomorrow! What's your life like? It's just a mist that appears for a little while, and then is gone. 15 What you should say is, "If it's the Lord's will, we'll live like this and plan to do that." 16 But right now you're caught up in your vain ideas. All this boasting is evil. 17 For it is a sin if you know to do what's right but don't do it.