Rule 605 Competency of Judge as Witness

A judge cannot be a witness in a case they are overseeing. This keeps the judge's role clear. A judge's job is to be a neutral decision-maker, not someone who provides testimony.

If this rule is broken, you do not need to formally object in court to bring it up later. Most court rules require you to speak up right away or lose the right to complain about it. This rule is different because the problem is serious enough that the court will consider it without you having to say anything at the time.