The twenty-seven books of the Bible written by the sacred authors in apostolic times, which have Jesus Christ, the incarnate Son of God--his life, teachings, Passion and glorification, and the beginnings of his Church--as their central theme. The promises and mighty deeds of God in the old alliance or covenant, reported in the Old Testament, prefigure and are fulfilled in the New Covenant established by Jesus Christ, reported in the sacred writings of the New Testament (124, 128). See Bible; Covenant.