The Gift

To summarise all that he learnt from the book. They, the sinners, were not just some lucky individuals that had gotten the chance to become stronger in this world where humans could control powers. The sinners were a cursed bunch who had been eternally damned by heaven. They were the ultimate force against the heavens. 

Paul speculated that they might have been granted these positions by the sin of pride, since it was the only sin that was not present. They either had to follow this and accept is as their fate, or bid their time that the heavens lost interest on the earth or so... Ezra wasn't very sure about what that part meant, but he kept the book to read later, maybe going through it again would clear things up.

Lastly, at the end of the book, he was directed to pour a little magic into a black orb that was placed by the corner of the room close to the desk. Ezra found the ball and did so.