Acknowledgment of God
We, the People of the State of Illinois–grateful to Almighty God for the civil, political and religious liberty which He has permitted us to enjoy and seeking His blessing upon our endeavors–in order to provide for the health, safety and welfare of the people; maintain a representative and orderly government; eliminate poverty and inequality; assure legal, social and economic justice; provide opportunity for the fullest development of the individual; insure domestic tranquility; provide for the common defense; and secure the blessings of freedom and liberty to ourselves and our posterity–do ordain and establish this Constitution for the State of Illinois.
Article I, section 3.
The free exercise and enjoyment of religious profession and worship, without discrimination, shall forever be guaranteed, and no person shall be denied any civil or political right, privilege or capacity, on account of his religious opinions; but the liberty of conscience hereby secured shall not be construed to dispense with oaths or affirmations, excuse acts of licentiousness, or justify practices inconsistent with the peace or safety of the State. No person shall be required to attend or support any ministry or place of worship against his consent, nor shall any preference be given by law to any religious denomination or mode of worship.
Article I, section 17.
All persons shall have the right to be free from discrimination on the basis of race, color, creed, national ancestry and sex in the hiring and promotion practices of any employer or in the sale or rental of property. These rights are enforceable without action by the General Assembly, but the General Assembly by law may establish reasonable exemptions relating to these rights and provide additional remedies for their violation.
Article I, section 20.
To promote individual dignity, communications that portray criminality, depravity or lack of virtue in, or that incite violence, hatred, abuse or hostility toward, a person or group of persons by reason of or by reference to religious, racial, ethnic, national or regional affiliation are condemned.
Article X, section 3.
Neither the General Assembly nor any county, city, town, township, school district, or other public corporation, shall ever make any appropriation or pay from any public fund whatever, anything in aid of any church or sectarian purpose, or to help support or sustain any school, academy, seminary, college, university, or other literary or scientific institution, controlled by any church or sectarian denomination whatever; nor shall any grant or donation of land, money, or other personal property ever be made by the State, or any such public corporation, to any church, or for any sectarian purpose.
Article IX, section 6.
The General Assembly by law may exempt from taxation only the property of the State, units of local government and school districts and property used exclusively for agricultural and horticultural societies, and for school, religious, cemetery and charitable purposes. The General Assembly by law may grant homestead exemptions or rent credits.