James 4:11-17New International Version - UK (NIVUK)
11 Brothers and sisters, do not slander one another. Anyone who speaks against a brother or sister[a] or judges them speaks against the law and judges it. When you judge the law, you are not keeping it, but sitting in judgment on it. 12 There is only one Lawgiver and Judge, the one who is able to save and destroy. But you – who are you to judge your neighbour?
Boasting about tomorrow
13 Now listen, you who say, ‘Today or tomorrow we will go to this or that city, spend a year there, carry on business and make money.’ 14 Why, you do not even know what will happen tomorrow. What is your life? You are a mist that appears for a little while and then vanishes. 15 Instead, you ought to say, ‘If it is the Lord’s will, we will live and do this or that.’ 16 As it is, you boast in your arrogant schemes. All such boasting is evil. 17 If anyone, then, knows the good they ought to do and doesn’t do it, it is sin for them.