What does the fall of Satan teach us about evil?

The fall of Satan from heaven serves as a dramatic reminder of the reality of evil and rebellion against God. In Isaiah 14:12-14, we read about Lucifer's prideful attempt to ascend above God, resulting in his downfall: 'How art thou fallen from heaven, O Lucifer, son of the morning! ... Yet thou shalt be brought down to hell.' This passage highlights that even the most powerful beings are subject to God's authority. It teaches us that pride and ambition apart from God lead to destruction. Importantly, the narrative of Satan’s fall assures believers of God's power over evil; despite the existence of spiritual warfare, we find hope in the ultimate victory of Christ over sin and Satan.