(725 ILCS 5/112-2) (from Ch. 38, par. 112-2)
    Sec. 112-2. Impaneling the Grand Jury. (a) The Grand Jury shall consist of 16 persons, 12 of whom shall be necessary to constitute a quorum.
    (b) The Grand Jury shall be impaneled, sworn and instructed as to its duties by the court. The court shall select and swear one of the grand jurors to serve as foreman.
    (c) Before the Grand Jury shall enter upon the discharge of their duties the following oath shall be administered to the jurors:
    "You and each of you do solemnly swear (or affirm, as the case may be), that you will diligently inquire into and true presentment make of all such matters and things as shall be given you in charge, or shall otherwise come to your knowledge, touching the present service; you shall present no person through malice, hatred or ill-will; nor shall you leave any unpresented through fear, favor, affection, or for any fee or reward, or for any hope or promise thereof; but in all of your presentments, you shall present the truth, the whole truth, and nothing but the truth, according to the best of your skill and understanding; so help you God."
(Source: P.A. 85-690.)