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For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment. 2 Peter 2:4And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day. Jude 6
Then Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it. Job 1:7And Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it. Job 2:2
Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour. 1 Peter 5:8