Job, Chapter 1

I find it interesting that Job has 7 sons and 3 daughters, then 7000 sheep and 3000 camels. Both add up to a "ten" so to speak, and it seem that the most valued go first and are more numerous. As in, he has more sons and they are mentioned first. Not only that but as he has been mentioned as a good man, it subtley implies that he is rewared by more and of the best.

Satan having traveled all over the world (Verse 7) implies teh belief that evil is universal. He also seems to have come out of nowhere, and probably created by God himself, and is as clever as the snake, another of God's creations.