Apocrypha: A term applied to texts of uncertain authenticity or to writings where the legitimacy of authorship is in question. In Judeo-Christian theology, the word apocrypha refers to specific texts that some traditions do not consider as canonical or biblical.

Canon: An exclusive list of the books included in the Bible and written during the formative period of the Jewish or Christian faiths. These communities believe these books are inspired by God and/or that they express the authoritative history of the relationship between God and humanity.

Concordance: An alphabetical index of the words in the Bible, showing every contextual occurrence of the word and their locations.

Deuterocanonical Books: Books that the Catholic Church, Eastern Orthodoxy, Ethiopian Orthodoxy, and Oriental Orthodoxy include in the Old Testament that were not in the Jewish Tanakh (Hebrew Bible). Traditionally Protestant Christians do not include these books in the Bible.

Epistles: Twenty-one Christian letters (many by the Apostle Paul) that consist mostly of counsel and instruction to the early Church.

The Gospels (Matthew, Mark, Luke, and John): Four narratives of Jesus Christ’s life and ministry at the beginning of the New Testament.

The New Testament: Twenty-seven separate works written by members of the early Christian community that describe the life and message of Jesus and his followers.

The Old Testament (also called the Hebrew Bible): Constitutes the first major part of the Bible according to Christianity. It is usually divided into the categories of law, history, poetry (or wisdom books), and prophecy. All of these books were written before the birth of Jesus of Nazareth, who is the subject of the subsequent Christian New Testament.

Original Languages: The Jewish Tanakh or Hebrew Bible, which is essentially the same as the Christian Old Testament, was mostly written in Hebrew. The New Testament is widely agreed to have originally been written in Greek.

Revelation: An apocalyptic prophecy, which is also technically the twenty-second epistle.

Torah (also The Law and the Pentateuch): The first five books of the Hebrew Scriptures and the Christian Old Testament: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy.