Art. 802.  General charge; scope

The court shall charge the jury:

(1)  As to the law applicable to the case;

(2)  That the jury is the judge of the law and of the facts on the question of guilt or innocence, but that it has the duty to accept and to apply the law as given by the court; and

(3)  That the jury alone shall determine the weight and credibility of the evidence.