A  ¹¹ Do not speak evil of one another, brethren. 

B  He who speaks evil of a brother and judges his brother, speaks evil of the law and judges the law. But if you judge the law, you are not a doer of the law but a judge.

B’  ¹² There is one Lawgiver, who is able to save and to destroy.

A’  Who are you to judge another?

A: Don’t Speak Evil.
B: We are not the Judge/Lawgiver.
B’: There is One Lawgiver.
A’: Don’t Judge.