Are you for or against the separation of church and state?

[Esquilax]

Sin/evil refers to a bad relationship between two (possibly good) things. Please explain to me how one creates such a relationship. I can see how it is possible to create the capacity or choice for such a relationship, but the relationship itself?

That's your definition of sin, not a universal one. Some disagree with you.

Beyond that, if you've got a god responsible for the creation of everything that exists, then by necessity he created sin even if it is a conceptual thing. If he created the capacity for sin to occur then he's responsible for it when it does; if I leave my child alone with a knife I'll be held responsible if he harms himself, no?

If sin is so antithetical to god, it's weird to me that he'd allow it to exist in the first place, but that's beside the point; the choice is still binary. Either sin exists via a conscious choice or set of choices that god made, making it his deal, or it came about without the input of god at all, in which case it's something from nothing.