James 4:13-17 - Arrogant Boasting About The Future
13 Come on now, you people who are saying, "Today or tomorrow we will go to this [or that] city, spend a year there, do business and make some money." 14 [For actually] you do not know what your life will be like tomorrow. What is your life? For you are [like] a mist that appears briefly and then vanishes.
15 Instead, you should be saying, "If it is what the Lord wants, we will live and do this or that." 16 But, as it is, you people are boasting in your arrogance [and] all such boasting is evil. 17 So, the person who knows the good [he ought] to be doing, but is not doing it, is sinning.