We were called to be witnesses, not lawyers or judges.
Don't try to play God and judge people. Just show up to court and offer your testimony. God doesn't want us to hide in the back of the room when there's testimony to be heard.
Chapter 7 - Judging Others. “Stop judging, that you may not be judged. For as you judge, so will you be judged, and the measure with which you measure will be measured out to you.