Why are you uncomfortable with the supernaturalist worldview of the biblical writers? Evangelicals don't want to just say, "Well, the inspired writers were wrong about some of their beliefs about the spiritual world and its inhabitants." That really doesn't work in a confessional situation! So instead we come up with excuses and interpretations that allow us to remake the biblical writers in our own post-Enlightenment image. I understand that impulse, but it's not honest.
Michael S. HeiserWhen biblical material touches on the natural world, we can legitimately use the tools of science. Sometimes that shows us - no shock here - that biblical writers didn't know as much as we now know about the natural world - but God knew that when he picked them, so that alone tells us that "doing science" that would satisfy a 21st century - and beyond - audience wasn't what God was interested in with respect to the enterprise of producing Scripture for posterity.
Michael S. HeiserAngels 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".
Michael S. HeiserHow much of what the biblical writers believed about the supernatural world do I believe? They weren't us. We are products of the Enlightenment; they were not. So let's stop denying that reality. Rather than sitting in judgment on them from our Enlightenment perches, we ought to have them sit in judgment on us when it comes to informing us about the supernatural world. After all, what they wrote was ultimately overseen by God.
Michael S. Heiser