Morality is a construct created by religion so of course it's dependent. If we take a look at a time when religion didn't exist, a time when humans were more primitive, morality wasn't a thing. You didn't think twice about killing a bird, even another human if the time called for it, it was all about survival instinct. Religion swung around and suddenly, that changed. Killing another person wasn't tolerated. People thought twice about killing that bird. Manners happened and society was created and now we have a lot of conflicting morals - many which have diverted from religion. But without religion, none of it could've happened or if it did, it would've taken much longer.