"For this purpose the Son of God was manifested, that He might destroy the works of the devil" (1 John 3:8).
Peter says Satan "walks about like a roaring lion, seeking whom he may devour" (1 Peter 5:8). Peter's counsel? "Resist him, steadfast in the faith" (v.9).
Paul says the same: "Be strong in the Lord and in the power of His might. Put on the whole armor of God that you may be able to stand against the wiles (schemings) of the devil" (Ephesians 6:10,11).