Hebrew is like English in this respect. English does not tolerate a definite article before a proper personal noun. I'm not 'The Mike', my brother is not 'The Brad', my wife is not 'The Drenna'. Hebrew is the same way, it does not have definite articles before proper personal names. That means that the Satan in Job is not a personal name. This should not be capital 'S' Satan. It should be just a generic adversary. It's not the figure of Genesis 3. All of that is true, but what isn't true is that there's no theology in the Bible about an original rebel. Oh, there is, and that is what Genesis 3 is about. Check it out!