Jesus Christ defeated Satan already on the Cross, and in the glory of the Resurrection. He is risen from the dead and is Son of God with power by resurrection from among the corpses. He has said, “All power belongs to Me, in heaven and in earth.” He has said, “Go into all the world and preach the Gospel.”
He has breathed on us the power of the Holy Spirit! We are not to turn around in the face of the enemy; or in the face of false doctrine, we are to arm ourselves with the whole armor of God and march right into it!