In many cases, the New Testament could be considered a primary source about the life of Jesus of Nazareth, since it was written by people who lived close to the time of Jesus. Besides, many historians have found some historical proof of some of the things that are written in the New Testament.
However, the New Testament is also a religious text, essentially, its main goal is not to tell the story of Jesus of Nazareth in an accurate manner, but to tell a religious story. For this reason, the vast majority of stories written in the New Testament are simply unreliable for professional historians.
