13 Come now, ye that say, Today and tomorrow we will go into such a city and continue there a year and buy and sell and get gain; 14 and ye do not know what shall be tomorrow. For what is your life? Certainly it is a vapour that appears for a little time and then vanishes away. 15 Ye ought to say instead, If the Lord wills, and if we live, we shall do this or that. 16 But now ye boast in your arrogance; all such glory is evil. 17 Therefore sin is still in the one that knows to do good and does not do it.