11 Brothers and sisters, don’t say evil things about each other. Whoever insults or criticizes a brother or sister insults and criticizes the Law. If you find fault with the Law, you are not a doer of the Law but a judge over it.
12 There is only one lawgiver and judge, and he is able to save and to destroy. But you who judge your neighbor, who are you?
13 Pay attention, you who say, "Today or tomorrow we will go to such-and-such a town. We will stay there a year, buying and selling, and making a profit."
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.