The First Amendment protects the freedom of religious groups to engage in certain key religious activities, including the conducting of worship services and other religious ceremonies and rituals, as well as the critical process of communicating the faith. Accordingly, religious groups must be free to choose the personnel who are essential to the performance of these functions.
The ministerial exception should be tailored to this purpose. It should apply to any employee who leads a religious organization, conducts worship services or im-portant religious ceremonies or rituals, or serves as a messenger or teacher of its faith. If a religious group believes that the ability of such an employee to perform these key functions has been compromised, then the constitutional guarantee of religious freedom protects the groups right to remove the employee from his or her position.
Throughout our Nations history, religious bodies have been the preeminent example of private associations that have act[ed] as critical buffers between the individual and the power of the State. Roberts v. United States Jaycees, 468 U. S. 609, 619 (1984) . In a case like the one now before uswhere the goal of the civil law in question, the elimination of discrimination against persons with disabilities, is so worthyit is easy to forget that the autonomy of religious groups, both here in the United States and abroad, has often served as a shield against oppressive civil laws. To safeguard this crucial autonomy, we have long recognized that the Religion Clauses protect a private sphere within which religious bodies are free to govern themselves in accordance with their own beliefs. The Constitution guarantees religious bodies independence from secular control or manipulationin short, power to decide for themselves, free from state interference, matters of church government as well as those of faith and doctrine. Kedroff v. Saint Nicholas Cathedral of Russian Orthodox Church in North America, 344 U. S. 94, 116 (1952) .