14 You don’t really know about tomorrow. What is your life? You are a mist that appears for only a short while before it vanishes.
15 Here’s what you ought to say: "If the Lord wills, we will live and do this or that."
16 But now you boast and brag, and all such boasting is evil.
17 It is a sin when someone knows the right thing to do and doesn’t do it.