The Ten Commandments relate to morality and piety.
Ethics or moral philosophy is a branch of philosophy that involves systematizing , defending , and recommending concepts of right and wrong conduct . In practice , ethics seeks to resolve questions of human morality by defining concepts such as good and evil , right and wrong , virtue and vice , justice and crime . The Ten Commandments , also known as the Decalogue , are a set of biblical laws relating to ethics and worship , which play a fundamental role in Judaism , Christianity , and Islam . The commandments include instructions to worship only God , to honour one 's parents , and to keep the sabbath , as well as prohibitions against idolatry , blasphemy , murder , adultery , theft , dishonesty , and coveting . Worship is an act of religious devotion usually directed towards a deity .