The problem with most humans is that in order to live and be able to hopefully understand or make sense of it--life--is that we anthropomorphize it.
We give life and/or the universe human characteristics. We anthropomorphize our worlds and so, the universe. We give the cold, uncaring, ever-progressing--however slowly--universe a personality and rules. And we do this so much so we name it.
For a lot of us, it can be merely “god” or “God.” For others, a lot of others, we take it further than that, even. We give, usually him, a specific name. Some examples are, of course, Jesus, Yahweh, Mohammed, Allah, or any number of monikers. We complicate things, the world, the universe and so, our lives and our own worlds.
The only real rule is love.
Love everything. Be kind. Share. Smile. Help one another. All good stems from one rule, this one rule.