13 Come now, you who say, "Today or tomorrow let's go into this city, and spend a year there, trade, and make a profit." 14 Whereas you don't know what your life will be like tomorrow. For what is your life? For you are a vapor, that appears for a little time, and then vanishes away. 15 For you ought to say, "If the Lord wills, we will both live, and do this or that." 16 But now you glory in your boasting. All such boasting is evil. 17 To him therefore who knows to do good, and doesn't do it, to him it is sin.