The Fourth Commandment is "Remember the Sabbath day, to keep it holy". It is one of the Ten Commandments and is the only commandment that was promulgated on Mount Sinai with a promise attached to it. The Fourth Commandment is also the longest in the Decalogue. It outlines the importance of observing the Sabbath, which is a day of rest and worship. The Fourth Commandment can also be interpreted as "Honor thy father and thy mother" under the Augustinian division used by Roman Catholics and Lutherans. This interpretation emphasizes the importance of respecting and obeying parents and other authority figures.