In Christianity, the Sabbath is generally a weekly religious day of rest as ordained by one of the Ten Commandments (the third commandment by Roman Catholic and Lutheran numbering, and the fourth by Eastern Orthodox and usual Protestant numbering). The practice is derived from Judaism, the parent religion of Christianity; shabbat (Hebrew: שַׁבָּת‎, šabbāt) meaning "the [day of] rest" and entailing a ceasing or resting from labor. The institution of the Old Testament Sabbath, taken as a "perpetual covenant ... a sign for ever" by the people of Israel (Exodus 31:16-17-NRSV), and also applicable to proselytes (Deut 5:13-14, Ex 20:9-10, 23:12), was in respect for the day during which God rested after having completed the creation in six days (Genesis 2:2-3, Exodus 20:8-11).