What we know about Jesus life comes from the four Gospels of the new Testament.
The New Testament is divided into four parts (1) The Gospels, (2) The Acts of Apostles (3) Epistles and (4) Revelation.
The Gospels describe the life and teachings of Jesus.
The life of Jesus comes from his followers, Mathew, Mark, Luke and John.
The first three Gospels have their own difference but still show a family semblance in their story, Language and order. The first three Gospels are called the Synoptic Gospels, which means "together see"