Called also simply THE COMMANDMENTS, COMMANDMENTS OF GOD, or THE DECALOGUE (Gr. deka, ten, and logos, a word), the Ten Words of Sayings, the latter name generally applied by the Greek Fathers.
The Ten Commandments are precepts bearing on the fundamental obligations of religion and morality and embodying the revealed expression of the Creator's will in relation to man's whole duty to God and to his fellow-creatures.
They are found twice recorded in the Pentateuch, in Exodus 20 and Deuteronomy 5, but are given in an abridged form in the catechisms. Written by the finger of God on two tables of stone, this Divine code was received from the Almighty by Moses amid the thunders of Mount Sinai, and by him made the ground-work of the Mosaic Law. Christ resumed these Commandments in the double precept of charity--love of God and of the neighbour; He proclaimed them as binding under the New Law in Matthew 19 and in the Sermon on the Mount (Matthew 5).
The Council of Trent (Sess. VI, can. xix) condemns those who deny that the Ten Commandments are binding on Christians.
Background: What is the Pentaeuch? The first five books of the Old Testament: Genesis, Exodus, Leviticus, Numbers, Deuteronomy.