It’s a simple matter of logic: Satan is an angel. All angels were created (Colossians 1:16; John 1:1-3). Therefore, Satan was created. He is, therefore, God’s Devil. Satan is not the equal and opposite power of God (contra dualism). He is not eternal. His power is not infinite. He does not possess divine attributes. In sum, he is no match for God! If anything, Satan is the equal and opposite power of the archangel Michael, but not God.