Well, Seth can take a hint. For some reason Seth cannot fathom, God is punishing him. But Seth decides he's not going to wimp out like Job. Seth is determined to respond in kind to the Almighty. He writes down the Ten Commandments and resolves to break every one of them.
Commandments is a serio-comedy about the discovery of an unexpected value in blasphemy.
Seth's theological project has wry, temporal usefulness. You see, these bad things should be happening to Harry, not to a good person like Seth. Seth ticks off the easier commandments with little difficulty. After all, it's not that hard to have a false idol before him. Or take the lord's name in vain.