W. Va. Code § 56-6-22: Oral instructions by court; written instructions during trial.

Nothing in the three next preceding sections contained shall affect the power of the court during the trial of the case to instruct the jury orally concerning matters not proper for their consideration or concerning the conduct of any person in connection with the trial; or, otherwise, on its own motion to instruct the jury in writing on the law of the case at any stage during the trial, subject to the right of exception by either party.