I personally need to apply this to myself, me thinks I will hang out in their class, they are learning some good stuff!

James 4 NIV
4:11
Brothers, do not slander one another. Anyone who speaks against his brother or judges him speaks against the law and judges it. When you judge the law, you are not keeping it, but sitting in judgment on it.

4:12
There is only one Lawgiver and Judge, the one who is able to save and destroy. But you--who are you to judge your neighbor?