805 ILCS 110/35

Any church, congregation or society formed for the purposes of religious worship, may become incorporated in the manner following: By electing or appointing, according to its usages or customs, at any meeting held for that purpose, two or more of its members as trustees, wardens and vestrymen, (or such other officers whose powers and duties are similar to those of trustees, as shall be agreeable to the usages and customs, rules or regulations of such congregation, church or society), and may adopt a corporate name; and upon the filing of the affidavit, as hereinafter provided, it shall be and remain a body politic and corporate, by the name so adopted.