Even the Demons can't just do what they want

Even evil spirits and demons know that God is real, know that Jesus is powerful… and have to ask permission in order to act.

“When he saw Jesus from a distance, he ran and fell on his knees in front of him. He shouted at the top of his voice, “What do you want with me, Jesus, Son of the Most High God? In God’s name don’t torture me!” For Jesus had said to him, “Come out of this man, you impure spirit!” Then Jesus asked him, “What is your name?” “My name is Legion,” he replied, “for we are many.” And he begged Jesus again and again not to send them out of the area. A large herd of pigs was feeding on the nearby hillside. The demons begged Jesus, “Send us among the pigs; allow us to go into them.” He gave them permission, and the impure spirits came out and went into the pigs. The herd, about two thousand in number, rushed down the steep bank into the lake and were drowned.”
‭‭Mark‬ ‭5:6-13‬ ‭NIV‬‬