How do we know God has authority over Satan?

The Bible reveals that Satan is a created being operating under God’s divine sovereignty. He is described as being limited by God's will, much like a dog on a leash, where his actions serve God's greater purpose. Scripture teaches that God can use even the evil intentions of men and Satan to bring about His ultimate plan. For example, Isaiah 45:7 states, 'I form the light and create darkness; I make peace and create evil. I, the Lord, do all these things.' This underscores God's total authority over all creation, including adversaries like Satan.