Video from gotquestions.org
"How powerful is Satan? Is Satan as strong as God? What can Satan do? What can the devil do? In this video, Pastor Nelson with Bible Munch answers the question, “How much power does Satan possess”?" from video introduction.
"Satan was an angel created by God who turned against God’s authority (Isaiah 14:13) and became the head of a kingdom of evil spirits called demons, his “angels” (Matthew 25:41). His power both in the heavenly realm and on earth is great and should not be underestimated. However, while Satan and his forces are formidable enemies, Jesus Christ crushed Satan’s power, fulfilling the prophecy of Genesis 3:15. The cross of Christ won the victory (John 12:31). “The prince of this world now stands condemned” (John 16:11), and Jesus will one day destroy Satan’s power completely and purify creation (2 Peter 3:10)..." from the article: How much power does Satan possess?