It is for God to judge, not for us

11 Speak not evil one of another, brethren. He that speaketh evil of his brother, and judgeth his brother, speaketh evil of the law, and judgeth the law: but if thou judge the law, thou art not a doer of the law, but a judge.

12 There is one lawgiver, who is able to save and to destroy: who art thou that judgest another?

James 4:11,12.