Lost Scriptures: Books that Did Not Make It into the New Testament by Bart D. Ehrman is an anthology of early Christian writings not included in the Bible. It offers translations of apocryphal gospels, epistles, and revelations, providing a historical look at the diverse beliefs and "lost" traditions of the early Christian era. The book is an essential academic resource for exploring how Christianity was not unified in its early centuries but rather a rich, multifaceted, and often competitive movement.