Religion often provides moral principles for ethical behavior. In some religions, these principles are set in-place by a higher authority. Study of the principles within religion can be used to explore how people morally behave or how people use those principles to make sense of spirituality.
Below are links for the top five major global religions. However, keep in mind that there are other faiths beyond those listed faiths, including various indigenous faiths (see one example in the Cultural Relativism section).
Buddhism
Christianity
Hinduism
Islam
Judaism
Interfaith