Satanology: Understanding Satan and Demons

Who is Satan and what is he? There are various views on this. Some believe Satan is the personification of evil but not an actual person or being. However, Scripture teaches Satan is not just an invisible evil power, nor a personification of it. He is an actual being (cf. Job 1:6-12, Matt 4:1-11, Rev 20:1-3, 7-10). In fact, outside of God, Satan apparently is the most powerful being in the world (...