An explanation from a Christian perspective
John 1:1-3 “In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made.”
Men have been debating and looking for the historical Jesus for centuries. He is confoundingly hard to find. There were no such thing as “birth certificates” or written records of most ordinary things. The Jewish Priests and scribes kept very detailed records of genealogies of families and tribes in the temple at Jerusalem, but they were destroyed when the temple was burnt and pillaged by the Romans in 70AD. Records kept by the Romans themselves lack mention of the comings and goings of ordinary people. A wandering rabbi ministering to the Jews was of little interest to them. Even his death at their hands would hold little reason for more than a cursory mention. Pontis Pilate was quite proficient in crucifying the Jews for almost any reason.
Yet the actions and activities of the horrible Pilates, Herods and Caesars of his time are all too well documented. Annas and Ciaphas along with many of the scholars, scribes and priests of the time are very well documented. But the ordinary Josephs and Marys and Simons and Andrews who lived their lives and fished, farmed, built and bought and sold were just not worth the paper and ink.
Jesus was very much in many ways one of the “ordinary” people. The son of a carpenter and an ordinary Jewish girl, both from very large families of ordinary folk. He lived most of his life laboring and fellowshipping with the people in a very small village far to the north of the “big city” Jerusalem. Very few people saw him as “special”, and those people generally kept that knowledge to themselves until after his death. Even during the 3 years of his ministry, with all of the miracles and teachings, his cousin John the Baptist was better known than he was. He seldom strayed far from Galilee, Samaria and Judah in all of his travels. Jesus didn’t “found a religion” like Buddha or Mohammad. He wasn’t a “great leader” like Moses. He didn’t fight great battles like David or Joshua (who he was named after FYI).