What does the Bible say about Satan's power?

Satan, though a powerful being and described as the 'prince of this world,' is ultimately an adversary who operates under the authority of God. Romans 16:20 assures believers that the God of peace will crush Satan under their feet shortly. This demonstrates that while Satan has influence and deceives many, including the unregenerate, he is still fulfilling God's purposes, highlighting the sovereignty of God in all matters. Consequently, instead of fearing Satan, believers should orient their trust towards God, who has dominion over all.