Religious law includes ethical and moral codes taught by religious traditions. Different religious systems hold sacred law in a greater or lesser degree of importance to their belief systems, with some being explicitly antinomian whereas others are nomistic or "legalistic" in nature. In particular, religions such as Judaism, Islam and the Baháʼí Faith teach the need for revealed positive law for both state and society, whereas other religions such as Christianity generally reject the idea that this is necessary or desirable and instead emphasise the eternal moral precepts of divine law over the civil, ceremonial or judicial aspects, which may have been annulled as in theologies of grace over law.

Halakha, also transliterated as halacha, halakhah, and halocho, is the collective body of Jewish religious laws that are derived from the Written and Oral Torah. Halakha is based on biblical commandments (mitzvot), subsequent Talmudic and rabbinic laws, and the customs and traditions which were compiled in the many books such as the Shulchan Aruch. Halakha is often translated as "Jewish law", although a more literal translation of it might be "the way to behave" or "the way of walking". The word is derived from the root which means "to behave". Halakha not only guides religious practices and beliefs, it also guides numerous aspects of day-to-day life.