What is the difference between the establishment clause and the free-exercise clause? the establishment clause stops the government from favoring a religion while the free exercise clause allows people to express their religion. the establishment clause allows the government to favor a religion and the free exercise clause allows people to express their religion. the establishment clause stops the government from favoring a religion and the free exercise clause stops people from expressing their religious beliefs. the establishment clause allows the government to favor a religion and the free exercise clause stops people from being able to express their beliefs.