As somebody once said about a million times, we'll never get to the bottom of any of this unless we are willing to turn our attention to the nature of the medium that all these God and Satan ideas are made of, thought.
We have the concept of "creation" and the concept of "destruction". In our minds, in the realm of thought, these concepts appear to be divided from one another, they appear as opposites. In the symbolic realm, in the dictionary definitions, this division is true.
But in the real world creation and destruction are not divided, but a single unified process. Every act of creation destroys the existing situation, and every act of destruction creates a new situation. So, the words creation and destruction are useful on the human scale, but the price tag for them is the introduction of profound distortion, the appearance of a division which doesn't actually exist in the real world.
This creation/destruction process is the nature of change. And change is the only fixed status quo in reality. So again, while "change" sounds like one thing, and "fixed status quo" sounds like it's opposite, they are really one and the same. Again we see the inherently divisive nature of thought dividing the single unified reality in to conceptual parts.
We could swap out the word "creation" for the word "God", and swap the word "destruction" for the word "Satan", and the same principle described above still applies. These religious concepts of God being one thing, and Satan being another thing, and humans being a third thing, are all products of the inherently divisive nature of thought.
As soon as we utter any noun we have entered the realm of illusion. As soon as a discussion begins with it's dependence on language, and language's dependence upon thought, and thought's dependence upon division, we immediately begin translating reality in to a pile of conceptual division delusion.
What the evidence of history shows is that until this issue of distortion is faced and managed, conversations based on illusory separations will go eternally round and round and round and round to nowhere. Is that the goal of philosophy, to go eternally round and round the same little circles?