NS,
If you have a set of morals that you judge your actions by then an action will between something that those rules determine bad or good, and people act in ways they consider bad no matter what the rule is.
Yes, and when you think, “God decided on the rules and I have no defence if I break them because those rules were written down for me” your only choice is between good (follow the rules) and bad (don’t follow the rules).
What you cannot do though is break the rules and still think yourself to be morally good – which I think is a qualitatively different from your earlier example of breaking the law vs disobeying an inerrant rule book, and between humanism and theism.
Further if you think that people just in general act in a way that they think is morally good then attributing that set of rules to a good doesn't change the moral responsibility. It's just their choice to accept those rules.
How is it “their choice to accept those rules” when the only way to be good is to follow them (because a morally inerrant god wrote or “inspired” them)? “They” might well think that a different moral action is a good one, but they cannot exercise that choice and still think themselves to be morally good when a supervening rule book applies.
In other words, “moral responsibility” here seems to me to be a rigged game.
The thread started by SteveH on the idea that what he thinks are the rules are very liberal, others of a theistic bent can and do disagree. So thinking the rules are from a god, even the very same one, doesn't seen to restrict a choice in what that person thinks of as right.
Yes it does – unless that is the theist thinks himself to be a better moral judge than his god.
So even in your rather idiosyncratic dea of moral agency that the action is relatively unimportant, people are still choosing what they think is right morally.
No they’re not. They already “know” what’s morally right because it’s written down for them.