Since Satan was an angel that rebelled against God are his other demons? What happened anyways? And why did God create angels (especially Satan the worst of them all) like them if He knew (which He obviously did) that they would turn against Him? Angels are supposed to be perfect like Jesus.
In J. R. R. Tolkien's novel
The Silmarillion, there is a creation narrative depicted in the story
Ainulindalë where the Creator essentially sings the fictional world into existence, after which he offers his "angels" (for want of a better word) the opportunity to participate in its history. Many accept, some don't.
I think there's a considerable amount of general truth to that. St. Augustine alludes to holding similar views of the creation and, in medieval Catholic history, this had become a widespread belief. Clearly, this irl history was some kind of influence on Tolkien when he wrote what is published in The Silmarillion.
Frankly, I find myself agreeing with virtually all of that.
I have heard Catholic theologians and scholars offer a more developed version of pre-Genesis 1 history. Specifically, God created the angels and then they watched the creation of the world (and the entire universe). And initially, God created the angels with free will. Crucially, throughout the process the angels did not see God's face. After the creation was essentially completed, God showed the angels the whole universe. Everything. No secret was withheld from them. He showed them the full marvel of His creation. Then He gave them the choice to serve the god who created everything they had just seen. As with Ainulindalë by Tolkien, most of the angels chose to serve God and some angels chose not to.
The angels who chose to serve God were then shown the Beatific Vision, the face of God. Once that happens, the viewer's will is bound to God's will forever. Disobedience is impossible after that because the Beatific Vision perfectly, completely and eternally aligns the servant to God. This is where our conception of free will ended for the angels. Their will became perfectly subject to God's will.
These same scholars speculate that the inverse is true as well. Rejecting the Beatific Vision eternally separates one from God. And this is where the fallen angels come in. Reconciliation isn't possible for them. None of them really want to repent anyway, even tho they know what's in store for them. But even if they wanted to, they still couldn't come back to God. They made their choice and it's permanent now. They also lack what we understand to be free will, except now they're perfectly alienated from God's will. No tradebacks.
I tend to find all of the above believable as well.
Why would God give them the choice? He gave Adam and Eve the choice to obey or disobey. Today, people have the choice to believe in Christ or to not believe. And the angels all faced their own choice as well. I venture that God prefers giving people a choice to have a relationship with Him or not to have one. He's willing but the choice is ours.
