They're not biographies in the fashionable feeling but accounts with allegorical intent. These are written to engender religion in Jesus as being the Messiah as well as incarnation of God who came to teach, endure, and die for men and women’s sins. It's called the Ascension, Jesus returns to Heaven. https://gunnergcvsd.sasugawiki.com/7083884/the_smart_trick_of_jesus_that_nobody_is_discussing