What does the Bible say about demons?
Here's the answer:
Demons are real spiritual beings, who chose to follow Satan in his rebellion against God.
When Satan rebelled against God, one third of the angels chose to follow him instead of God (Revelation 12:4). The angels who chose to follow Satan are fallen angels and they are known as demons. Demons are also referred to as “Satan’s angels,” “evil spirits,” and “unclean spirits” throughout the Bible.
The demons were afraid of Jesus (Matthew 8:29)! Why? Because Jesus could drive out the demons with a single word (Matthew 8:16). Satan and his demons know that they have only a short time left before Jesus ultimately destroys them in the Lake of Fire. The demons are still afraid of Jesus today because they know that He is more powerful than them and that He is God.
Demons will try to promote false teachings, fight against the good angels, and cause problems for believers, but they have already been defeated. Satan and his demons will try to deceive and attack us, but we have nothing to be afraid of because we belong to God and He is greater than them (1 John 4:4).
"The great dragon was thrown down to the earth, and his angels with him. The dragon is that old serpent called the devil, or Satan. He leads the whole world astray" (Revelation 12:9).
"Dear children, you belong to God. You have not accepted the teachings of the false prophets. That’s because the one who is in you is powerful. He is more powerful than the one who is in the world" (1 John 4:4).