805 ILCS 110/46b
The presiding officer, or duly authorized representative of any ecclesiastical body, or diocesan, or like ecclesiastical officer having jurisdiction agreeably to the laws of any sect or denomination over such ecclesiastical district or diocese, shall, as soon as may be after such appointment, make and file in the office of the recorder in the county of which such congregation, church, or society is organized, an affidavit, (which shall be recorded by such recorder), substantially in the following form:
State of Illinois,)) ss. County of ........) I, ...., do solemnly swear (or affirm, as the case may be), that the following persons (here insert their names) were appointed trustees (or wardens, vestrymen, or officers, by whatever name is adopted, with powers and duties similar with trustees) of (here insert the name of the congregation, church, society or corporation) according to the usages or customs (rule, regulations, articles of association, constitution, by-laws, or canons, as the case may be) by the (synod, presbytery, conference, convention, council, episcopate, or like ecclesiastical body, or diocesan, or like ecclesiastical officer, as the case may be), (here insert the name of the congregation, church, society, sect, or denomination, having charge or control over such congregation, church, society or corporation) under and by virtue of sections 46a, 46b, 46c, 46d, 46e, 46f, 46g and 46h, of "An act concerning corporations," approved April 18, 1872, and the (church, society or congregation, or trustees) adopted as the corporate name (here insert name). .................................... (Name of affiant and title, if any.) Subscribed and sworn to before me on (insert date).
Such affidavit, or copy thereof, duly certified by the recorder, shall be received as evidence of the due incorporation of such congregation, church or society.
805 ILCS 110/46b