(b) Before entering upon their duties, an oath or affirmation shall be administered to the foreman and each of the jurors providing, in substance, that each of them will: (i) Diligently inquire into a

(b) Before entering upon their duties, an oath or affirmation shall be administered to the foreman and each of the jurors providing, in substance, that each of them will: (i) Diligently inquire into all matters coming before them; (ii) Find and present indictments truthfully and without malice, fear of reprisal or hope of reward; and (iii) Keep secret matters occurring before the grand jury unless disclosure is directed or permitted by the court.