I used to, but I'm starting to become unsure. he Bible says Satan/the adversary can appear as an angel of light, but it's not saying there is one angel of light. Satan/the adversary is mentioned several times in the Bible, but the reference to Lucifer as a fallen being is actually directed to a king of Babylon. That was then linked to ("I saw Satan fall like lightning from heaven" (Luke 10). In  2 Corinthians 6:15, Paul asks: What concord hath Christ with Belial? Or what part hath he that believeth with an infidel? In the dead sea scrolls, Belial was the leader of angels of darkness against God and his angels of light. He's sometimes mentioned In occult literature as corrupting Lucifer, being Lucifer's dad, or being the second angel. I mention that because perhaps at one point Belial was seen as the primary Satan. I suspect neither Lucifer or Belial are the real identity of Satan and most Satanic cults pray to Lucifer as yet another layer of mystery. The higher-ups of the cults might know the truth, but I doubt regular people ever will until Christ throws him into The Lake of Fire.