Was Satan an angel?
Here's the answer:
Yes, Satan was an angel.
Satan is described as a cherub angel. He was one of the most powerful and beautiful angels, but he chose to sin against God. Satan sinned against God because he did not want to worship God...he wanted God to worship him. He wanted to be God.
Because of their sin, God cast Satan and the angels who followed him out of Heaven. Never again would they regain their position in Heaven. Satan was an angel, but after he sinned against God, he became a fallen angel. The angels who chose to follow Satan are also called fallen angels and the Bible refers to them as demons or Satan’s angels (Matthew 25:41)
Since Satan and his demons rebelled against God, their ultimate end is already written in stone. God will cast Satan and his demons into the Lake of Fire, where there will be never ending punishment (Revelation 20:10). We never need to be afraid of Satan because God is more powerful than him!
"I appointed you to be like a guardian angel. I anointed you for that purpose. You were on my holy mountain. You walked among the gleaming jewels" (Ezekiel 28:14).
"One day angels came to the Lord. Satan also came with them" (Job 1:6).
"The devil had caused them to believe lies. He was thrown into the lake of burning sulfur. That is where the beast and the false prophet had been thrown. They will all suffer day and night for ever and ever" (Revelation 20:10).