Don't be silly. You can walk around doing what you determine to be "good" and "moral" all you want.
You and your fellows can even draw up social contracts and do your best to abide by them, rather like a Homeowners Association.
But without a divine authority, without God, there is no morality.
God instructs the faithful as to what is good and what is evil.
Who instructs you? I mean it not as a challenge or a rebuke, but a genuine question: Who or what instructs you?
Again, this assumes the conclusion.
Who instructs you? I mean it not as a challenge or a rebuke, but a genuine question: Who or what instructs you?
A system of ethics based on two simple, self-evident truths. That the universe exists and that I exist within it.