The truth is that we don't know much about the spiritual world except for what Scripture tells us, so it's unwise to think we can speak with clarity about what a divine being can or cannot do. The tools of analyzing the natural world are of no use for analyzing the supernatural world. For the latter we need rules of logic, and the supernatural beliefs of the biblical writers are quite defensible in that arena.

We're on safe ground to presume that self-interest and hubris are at the core of the rebellion.

Angels can fail because God allows them to make decisions and they are lesser beings than the perfect God. They can go astray, but the task is legitimate. God never tells they aren't allowed to instruct people - "just shut up and babysit them".

The powers of darkness are still part of the spiritual world - they don't become something else when they rebel against God. Disembodied believers are, by definition, also part of the spiritual world. So are God and Christ.

Scholarship aimed at truly understanding what the biblical writers meant often does not filter down into the church and through the pulpit to folks who show up on Sunday. I think that's just wrong, but scholars rarely make any effort to decipher their own scholarly work for people outside the ivory tower.

We think "reading the Bible in context" means thinking about the handful of verses before and after the verses we're looking at on the page. That isn't the case. While that's important, context is so much wider than a handful of verses.

Ruling the way God wants you to rule means fostering the ordered relationships he desires, not because he is a killjoy, but because that order maximizes human happiness and love for God. Part of that is worshipping only the true God and no other.