We all know that there there were many gods prior to Jesus that did everything else that he did. Appllonious of Tyana, Mithras, Horus... you know the deal. There are around 20 savior gods that share many of his traits. Born of a virgin, God in the flesh or powers of the gods possessed, resurrection, etc. But what about Old Testament characters? Did character in the Old Testament exist prior to Judaism? Yes, the flood myth has existed considerably longer than Judaism. In the Gilgamesh flood, we run across Utnapistim.
Utnapistim was the original Noah. The flood of Gilgamesh tells the story of Utnapistim.Utnapistim, like Noah, was approached by Ea (a god) and told to build a boat to save himself and his family, as well as a number to the local animals. The Boat size was specified. 120 cubits with equal sides. A cubit is roughly 18 inches or 45 centimeters, but the size varied over the years. There were compartments, with between 6 and 9 decks. Hell, you can reproduce that and feel accurate about it.
Maybe not so accurate or faithful that you'll let a wooden keel and beam support it at that length, let alone sail it as a wood structure, loaded, especially in a storm, but you have faith that Noah was able to do it.
Besides building a boat, Utnapishtim also:
It's a little more than coincidental as a story God(s) tell one man to save himself and the animals because they are about to flood the world. One man builds a ship larger than is possible out of only wood and proceeds to load it then end up on the top of a mountain. This is the same story and if you took the same details from a copy written story today, you'd be sued and lose. As an aside, it is funny that Judaism felt the need to spice up and make the story grander.
Here's the deal. Besides the Bible lacking originality, you have a God(s) so powerful that they can create and destroy the world. But they aren't powerful enough to convince people to change. Simple argument moves people to change. If you could stop everyone else in the world for a few minutes and walk me through it (like in the movies), I'll buy that you are god. It's not difficult for a being that created the world in six days. So why is it that these God(s) can't even manage this feat, yet I'm supposed to worship him for a cruel act of mass murder? It's historically wrong and simply not even a respectable story even if there were evidence that it had happened. So I reject the God(s) of both flood myths.