How do angels and demons differ?
When Lucifer rebelled against God he and the angels who followed him became implacable enemies of the Lord. Angels are oriented toward God and joyfully obey him; demons are oriented against God and remain in constant rebellion. The Bible calls angel’s “ministering spirits sent to serve those who are heirs of salvation” (Hebrews 1:14). In contrast, demons are hostile to human beings and intent on striking out against God by harming humans, whom God loves.