Why the phrase can be confusing
The phrase separation of church and state is widely used, but it can suggest a narrower principle than the one at issue. In public law, the concern is not only the institutional church. It is the relationship between government and religion more broadly, including organized communities, independent practitioners and people whose convictions are non-theistic.
A useful description is therefore separation of religion and government. The shorter phrase remains culturally familiar, so it is used here with that broader meaning: public authorities should not establish a preferred faith, and they should not obstruct sincere religious or non-religious conscience without a lawful justification.
- Religious communities may include churches, mosques, synagogues, temples, gurdwaras and other forms of communal practice.
- A person may practice privately without belonging to an organization.
- Some people identify with a religious tradition without participating in a formal institution.
- Humanists, secularists, agnostics and atheists may hold considered worldviews about meaning, morality and public life, even when they do not describe themselves as religious.
Disputes about religion and government often involve the largest or most politically visible communities, but constitutional protection is intended to apply across traditions and to people with no religious affiliation.
Examples from U.S. case law
Cases involving minority practices have helped clarify the scope of religious liberty. Courts have considered questions involving Santería practices, Native American religious traditions and the ability of incarcerated people to observe their faith. The broader lesson is that protection cannot depend only on whether a practice belongs to a majority religion.
Historical relationships between religion and government
For much of recorded history, religious authority and political authority were closely connected or formally combined. The details differed by country, but common arrangements included an official religion, public funding for religious institutions, religious tests for office, or laws that favored one community over others.
- England maintained an established Church of England, with constitutional ties between the church and the state.
- In Russia, the imperial government had a close relationship with the Russian Orthodox Church. Political changes later altered that arrangement, followed by renewed public recognition of the church.
- Germany developed systems in which the state can collect a religious contribution and transfer funds to recognized religious communities under legal rules.
Early American colonies also inherited forms of religious establishment and discrimination. After independence, some state constitutions and laws continued to use religious tests, favor particular denominations, permit public support for religion, or limit civic rights to Christians or theists.
Examples of earlier restrictions
- Officeholders could be required to affirm particular beliefs about the Trinity or the Bible.
- Legislative service could be limited to Protestant Christians.
- Public funds could be used to support an established Christian religion.
- Citizenship and civic rights could be conditioned on religious identity.
- Law could require observance of a designated Sabbath.
Religious freedom in Virginia
Virginia became an important setting for arguments about religious liberty. Thomas Jefferson opposed the continued power of the established Church of England in the state and argued that legal protection for conscience could reduce the risk of religious discrimination and conflict.
His Act for Establishing Religious Freedom eventually became law on 16 January 1786. The act helped establish a principle that government should not compel financial support for a faith, impose religious belief, or restrict civil rights because of a person’s convictions. Its ideas influenced later American discussions of religious liberty.
The “wall of separation”
In 1802, President Thomas Jefferson wrote to the Danbury Baptist Association of Connecticut about the First Amendment’s protection for religious establishment and free exercise. He described the result as a “wall of separation” between religion and government. This was a description of the constitutional relationship, not a provision using those exact words.
James Madison also warned that religious institutions could encroach on civil government even where constitutional safeguards were strong. Together, these historical arguments contributed to a continuing public debate about how much cooperation is compatible with religious neutrality.
U.S. courts have interpreted the First Amendment to prevent government from adopting an official religion or denomination and to limit governmental involvement that amounts to religious establishment. The precise legal tests and their application have changed over time, so individual disputes require attention to the relevant facts and current law.
The constitutional framework
The framers of the U.S. Constitution had seen how religious establishments and political power could contribute to discrimination and conflict. The First Amendment, ratified in 1791 as part of the Bill of Rights, contains two religion clauses alongside protections for speech, the press, assembly and petition.
In substance: Congress may not establish a religion or prohibit the free exercise of religion. The amendment also protects expression, publication, peaceful assembly and petitions to government.
The establishment principle and the free-exercise principle can sometimes pull in different directions. Preventing government favoritism may require neutral treatment, while protecting individual practice may require accommodation. Separation therefore does not mean that religion must be absent from public life or that religious people lose civic rights. It means that government must exercise authority without making one faith the official standard for everyone.
Further reading
This introduction continues in the second essay on separation of church and state. Related background is available in the site’s material on religious freedom, religion and law, and human rights.
Historical and legal sources
- E. S. Gaustad, Faith of Our Fathers: Religion and the New Nation, 1987.
- James Davidson and Os Guinness, editors, Articles of Faith, Articles of Peace, 1990.
- A. A. Lipscomb and A. E. Bergh, editors, The Writings of Thomas Jefferson, volume 16.
- Virginia’s Act for Establishing Religious Freedom and the First Amendment to the U.S. Constitution.