Mo. Rev. Stat. § 546.380
Current with changes from the 2023 Legislative Session
The court shall not, on the trial of the issue in any criminal case, sum up or comment upon the evidence, or charge the jury as to matter of fact, unless requested to so do by the prosecuting attorney and the defendant or his counsel; but the court may instruct the jury in writing on any point of law arising in the cause.
§ 546.380, RSMo
RSMo 1939 § 4083