This introduction to the book of Deuteronomy reports on the title, author, date, contents, theological teaching, structure, and outline. The Hebrew name of the book is ‘elleh haddebarim ("These are the words") or, more simply, debarim ("words"). The word "Deuteronomy" (meaning "repetition of the law") arose from a mistranslation in the Septuagint.
This introduction to the book of Numbers reports on the title, author, date, contents, theological teaching, structure, and outline. Numbers presents an account of the 38-year period of Israel’s wandering in the desert following the establishment of the covenant of Sinai.
This introduction to the book of Exodus reports on the title, author, outline, and date of writing. Exodus lays a foundational theology in which God reveals his name, his attributes, his redemption, his law and how he is to be worshiped. It also reports the appointment and work of Moses as the mediator of the Sinaitic covenant, describes the beginnings of the priesthood in Israel, defines the role of the prophet and relates how the ancient covenant relationship between God and his people came under a new administration (the covenant given at Mount Sinai).
This introduction to the book of Genesis reports on the title, author, outline, and date of writing. Historically, Jews and Christians alike have held that Moses was the author/compiler of the first five books of the OT. These books, known also as the Pentateuch (meaning “five-volumed book”), were referred to in Jewish tradition as the five fifths of the law (of Moses).
Leviticus receives its name from the Septuagint (the pre-Christian Greek translation of the OT) and means "relating to the Levites." Its Hebrew title, wayyiqra', is the first word in the Hebrew text of the book and means "And he [i.e., the Lord] called." Read more about the Book of Leviticus from the NIV Study Bible, Introductions.