James 4:13-17 - Arrogant Boasting About The Future
13 Listen to me, you who say 'To-day or to-morrow we will go to such and such a town, spend a year there, and trade, and make money,' 14 And yet you do not know what your life will be like to-morrow! For you are but a mist appearing for a little while and then disappearing.
15 You ought, rather, to say 'If the Lord wills, we shall live and do this or that.' 16 But, as it is, you are constantly boasting presumptuously! All such boasting is wicked. 17 He, then, who knows what is right but fails to do it--that is sin in him.