Colossians 1:13

For He has rescued us and has drawn us to Himself from the authority of darkness and has transferred us to the kingdom of His beloved Son.

Jesus died on the cross so we can rule and reign over the enemy here. Our authority to rule and reign over all the powers of the enemy is an active force that we are to use. Speak against negative, harassing thoughts when the enemy brings them to mind. “Devil, I submit myself to the will of God, and I resist you in the name of Jesus!” He has to leave!