The Spirit warns that many will fall to doctrines of demons—here’s how to keep your heart from deception. Deception is one of the greatest dangers believers will face in the end times. God’s Word gives us clear instructions: “Above all else, guard your heart, for everything you do flows from it” (Proverbs 4:23), and “Rejoice in the Lord always… be anxious for nothing… and the peace of God will guard your hearts and minds” (Philippians 4:4–10).