Through His death Jesus completely defeated Satan. The word destroy in the opening scripture comes from a Greek word katargeō which means to render completely idle and useless or bring to nought. This signifies the complete and permanent defeat of Satan and his cohorts. The redemptive intervention of Christ was God's final blow to Satan. After Jesus' death and resurrection, God completely defeated Satan on our behalf. And this means we have the victory over Satan completely and permanently. Don't give Satan the attention and recognition he doesn't deserve. Don't ever be afraid of his maneuvers. He is a defeated foe. Colossians 2:15 ESV alludes to Christ's defeat of Satan, "He disarmed the rulers and authorities and put them to open shame, by triumphing over them in him". Jesus disarmed Satan stripping him of his sham authority. Today Satan thrives on deception. He deceptively casts fear in people's hearts. Jesus called him a liar and father of it (John 8:44). That is why when you know God's truth you keep Satan in that place of permanent defeat. Your perpetual walk in victory which is already secured in Christ is based on the knowledge of truth. Truth is mentioned first in the whole armour of God given to us in Ephesians 6:14. Satan doesn't have the legal right today to bind anyone. Jesus said you shall know the truth and the truth shall make you free. You walk in your liberty in Christ by God's truth. This truth is God's word (John 17:17). Value God's word always.