What does the Bible tell us about evil or fallen angels?

And the Lord said to Satan, “Have you considered my servant Job, that there is none like him on the earth, a blameless and upright man, who fears God and turns away from evil? He still holds fast his integrity, although you incited me against him to destroy him without reason. read more

For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places. Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm. read more

Satan and his demons deceive the world (2 Corinthians 4: 4), promulgate false doctrine (1 Timothy 4: 1), attack Christians (2 Corinthians 12: 7; 1 Peter 5: 8), and combat the holy angels (Revelation 12: 4–9). The demons/fallen angels are enemies of God, but they are defeated enemies. read more

The Bible says it’s important to remember that people are part of a spiritual battle every day in this fallen world, in which fallen angels who aren’t usually visible nevertheless influence human lives: “For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms” (Ephesians 6: 12). read more