Satan in the Book of Job

In Job, the first couple of chapters where this figure shows up, Satan is not his name. It's interesting that how language evolves because we have a phrase, the devil's advocate. In Chronicles, it says that the Lord put David up to an evil spirit from the Lord and now names him as Satan. And in Jubilees, when it tells the story of Abraham's test of when God told Abraham to sacrifice Isaac, Mastema being another name for the Satan figure.