What is the devil’s work? It’s messing up your heart. Filling it with worry. Filling it with guilt. Filling it with resentment. Filling it with anger. Filling it with fear. Filling it with confusion. It’s whispering in your ear that you’re worthless and helpless and hopeless and aimless.
Where else do you think that stuff comes from? It’s not from God. It is good for us to remember who our enemy is and that our minds are a prime target for Satan's arrows. Guard your freedom in Christ, fight for it, and shut Satan down with God's word.
"We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ". —2 Corinthians 10:5