Hmm...let's see. l'm going to go with....
Because, sin to this "God" character is simply a matter of disobedience, as opposed to good/bad, right/wrong. And, I'm guessing He certainly can't disobey himself, being all la-di-da, and such.
So, if He tells you not to kill as a general rule, don't.
If He tells you to get to killin', best hop to it.
Yes, disobedience: It's what's for dinner. My final answer.
Because, sin to this "God" character is simply a matter of disobedience, as opposed to good/bad, right/wrong. And, I'm guessing He certainly can't disobey himself, being all la-di-da, and such.

So, if He tells you not to kill as a general rule, don't.
If He tells you to get to killin', best hop to it.
Yes, disobedience: It's what's for dinner. My final answer.