805 ILCS 110/46e
The trustees of every such congregation, church, or society, under the patronage, control, direction, or supervision of any ecclesiastical body, or diocesan, or like ecclesiastical officer, after the same has become incorporated under Sections 46a to 46h, inclusive, of this Act, and their successors, shall have perpetual succession with power to adopt a common seal, which may be altered and changed at pleasure, contract, and be contracted with, sue and be sued, plead and be impleaded, by the corporate name of such congregation, in all courts, whatever; to receive, hold, dispose of, mortgage, and convey any kind of property; to make and adopt by-laws for their government, not inconsistent with Sections 46a to 46h, inclusive, of this Act, or with the rules and regulations of the sect or denomination having the charge or patronage of the corporation; and shall alone have power to make all contracts needful in the management of the temporal affairs of such congregation, church, or society: but no conveyance, or mortgage shall be made to affect, or destroy the intent of any grant, legacy, or donation, that may be made to any person, or trustee, for the use of such congregation, church, or society, or for the use of any sect, or denomination. However, this limitation on the disposition of real or personal property does not apply to the extent that a restriction imposed by a donor on the use of an institutional fund may be released by the governing board of an institution under the Uniform Prudent Management of Institutional Funds Act . The trustees of any corporation, organized under Sections 46a to 46h, inclusive, of this Act, which is, or may be, under the control, patronage, direction or, supervision of any ecclesiastical body, diocesan, or like officer, shall hold and control, invest or reinvest the real and personal property of such corporation, and contract with reference thereto, according to the "Uniform Management of Institutional Funds Act", or the rules, regulations, constitution, articles of association, by-laws, or canons of such ecclesiastical body, diocesan, or like ecclesiastical officer.
805 ILCS 110/46e