Religious morals are absolute, they are either absolutely right or absolutely wrong. The whole point of following a religious text that's thousands of years old, is that the morals in it are supposed to be unchanging and absolutely correct from the beginning to the end of history.
If the qur'an can be wrong about the appropriateness of sex with children in contemporary society, why would you trust it as an authority on anything else?
Morality is defined by god alone, and god's morals never change, sin is always sin.
Whilst I'm sympathetic to the religious need for "moral closure"
(certainty, per se)
, I always find it difficult to accept the proposition that "god" alone defines morality. I'd argue that "divine command theory" fails to support the notion of absolute morality. If you posit god as the final frontier and creator of all, it follows that this entity (by common definition) decided on morality, quite arbitarily. If god did have a choice in deciding these moral facts, for example, we
ought not to kill each other, it then would logically follow that god had an infinite set of possibilities to choose from: in sum, "divine commands" must be relative at least to other contingencies.
The theist when faced with this relativism (and often disappointed) is allowed the luxury of saying that god did not have a choice when deciding these laws; but then we must question the
necessary components of this "god": omnipotence etc? Does this new entity fit the definition at all? If we reject relativism and imply that god had no choice we are left with two logical possibilities:
1) Moral facts exist beyond the realm of god, making the only thing special about god his ability to know these facts (from a further unknown source), not god himself.
2) "Divine commands" are not moral facts, as none such exist. This moral nihilism can lead to a well-supported position of atheism with careful contemplation.
I tend to lean towards the later, but am sympathetic to those who require moral certainty. After all, as a species, the one thing we love more then discovering patterns is feeling that our pattern is, above all else, correct.