James 4:15KJV

13Go to now, ye that say, To day or to morrow we will go into such a city, and continue there a year, and buy and sell, and get gain:

14Whereas ye know not what on the morrow. For what your life? It is even a vapour, that appeareth for a little time, and then vanisheth away.

15For that ye to say, If the Lord will, we shall live, and do this, or that.

16But now ye rejoice in your boastings: all such rejoicing is evil.

17Therefore to him that knoweth to do good, and doeth not, to him it is sin.