So... because it was a dragon it could talk or because it was really the Devil? There is no evidence dragons ever existed. Also doesn't explain why Balaam's ass could talk, too.
Not sure what you're getting at about the water. The Great Flood has been debunked by multiple archaeologists. No authentic pieces of the Ark have ever been found, and there is zero evidence the earth was totally encompassed in water. Gonna need a source about Babylonia. But you raise another issue. Adam was created on the Sixth day of creation, and was born 4,000 years before Jesus, which puts Adam, creation and us about 6,000 years apart. Science has discovered that the earth is more than 4.5 billion years old, so how do you explain that?
Not surprising that you misunderstand OCD. OCD is a debilitating anxiety disorder characterized by intrusive thoughts that lead to repetitive mental or physical compulsions.