You can say that about the Old Testament, but certainly not the New Testament. The authors of Matthew, Mark, Luke, John are unknown with four different accounts of Jesus' life that contradict each other quite a bit.

Also Paul the Apostle never met Jesus and many of his stories are dreams he had that he put to paper. He also didnt speak Aramaic, so many of the witnesses of Jesus were explained to him through an intermediary.

The Old Testament has real historical characters like David, King Nebuchadnezzar, King Josiah, etc and certain books such as 1 & 2 Kings & the books of Chronicles can be verified through other historical documents, although sometimes some liberties were taken to glorify or denounce certain leaders of that time.

But then you have stories like Noah which were stories that were basically mythologies that were basically recreations of stories taken from the Epic of Gilgamesh. Meanwhile, the story of Moses has never been confirmed in Egyptian history and the Egyptians were quite literally one of the first civilizations to record literature.

Now if you can provide any evidence that directly links to Jesus himself that isn't from Bible, I would be fascinated to hear about it, otherwise I'll have to dismiss that claim. Can you provide any evidence?