In game theory there is a concept known as tit-for-tat. It demonstrates that in a competitive two participant system, defensive non-aggression is the optimal strategy.

These principles are borne out in nature and can be observed in competition between organisms when no clear advantage exists which would incentivize a first move.

The foundational concept of morality (that it is wrong for one human to kill another human) undoubtedly grew out of evolutionary selection around these principles.

But game theory only offers weak proofs. Philosophers required more... concrete arguments. Hence: god.

We created god to serve as a source of absolute morality. A foundation not based on the fuzzy logic of statistics (which is more than sufficient to guide biology over many iterations; it's good enough for animals I dunno why it isn't good enough for intellectuals but whatever), but absolutes that could apply to all regardless of individual circumstances.

Having created god, in order to empower god it is necessary to ascribe EVERYTHING to god. If you don't, god ceases to function as a tool.

So to answer your question... morality is of god, and your conscience is your personal experience of god.