"Nor in theism. Only in specific religions ethical stances or specific ethical stances under atheism."
So you wish. But in theism, and in Christian theism in particular, that doesn't follow. In Christian theism, God is the ground of all being. Nothing is apart from him. There follows by necessity the inference an ontological relationship, and that relationship has consequences in our ethics and in our morality. Thus Plato and Aristotle, and Aristotle in particular with his 'prime mover' argumentation, went on to develop moral and ethical statements.
Cimic's principle of 'worth' is one that leaps immediately to mind. According to Christian theism (I specify, but I shouldn't have to), nothing is apart from the will of God. Things are but they didn't have to be. The reasonable inference is that if they are, it is because God valued their existence somehow. From that inference, one can infer that everything and everyone has 'worth.' It doesn't follow that we know what kind of 'worth' or value or how best to understand that, and I'm not getting into that here.
You may say that theism has no moral consequences. Nearly all of the great philosophers have disagreed, and I have not ever seen a treatment the length and quality of Aristotle's works, or Aquinas's, etc, refuting that position. Just a handful of atheists of late, asserting it on the Internet.