Demons are real. Demonic oppression is real. Possession is real.
Finally, be strong in the Lord and in the strength of his might. Put on the whole armor of God, that you may be able to stand against the schemes of the devil. 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. (Ephesians 6:10-13 ESV)
Jesus is real.
The unclean spirits, whenever they saw [Jesus], fell down before him, and shouted, "You are the Son of God!" (Mark 3:11)
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