Freedom of Religion

During the reading, I began thinking that a section of the First Amendment, Freedom of Religion, might have been designed to keep peace between citizens. We can have different outlooks on religions and perhaps even disapprove but everyone has the right to believe in what they choose. A student brought up that a person could sin with their hand, and they would have to remove their hand because it has sinned. Similar to the "An Eye For An Eye" principle. The student said that someone should tell them that this isn't right or "moral." But if someone went up to them and said that, they might not listen because their following their religion or belief. It could even cause potential conflict. So, could this act been created to keep peace? Or does the United States really accept such a wide variety of religions?