The most important book of Christianity is the
Bible.
The Bible is considered the inspired word of God and contains the foundational texts for Christian faith and practice. It's divided into two main sections:
* The Old Testament: This section shares much common ground with Judaism and recounts the history of the Jewish people, their covenant with God, the law, prophecies, and wisdom literature.
* The New Testament: This section focuses on the life, teachings, death, and resurrection of Jesus Christ, as well as the early development of the Christian Church. It includes the Gospels (Matthew, Mark, Luke, and John), the Acts of the Apostles, the Epistles (letters) written by early Christian leaders, and the Book of Revelation.
While the entire Bible is considered important, some Christians might emphasize particular sections or books within it, such as the Gospels (for their account of Jesus' life) or the Psalms (for their expressions of prayer and praise). However, the Bible as a whole is the ultimate authority and source of truth for Christian belief.