2 Corinthians 10: 3-5
For though we live in the world, we do not wage war as the world does. The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.
As we always said, we are dealing with very stubborn and rebellious demons headed by the Devil, the Beasts and the False prophet. All these cannot be seen by our physical eyes but they are here. Their days are numbered on Earth, so now will be the time they will display all that they have got in them. Actually, they have got nothing in them of their own. They must seek the permission from God who created the Earth and the whole universe. They can't act on their own. The LORD allows them to display their sting and evil stint for a short period of time only. During this short period of time, they would seek to do much damage around. Remember, they are destructive beings. They won't quietly sit still until they themselves are destroyed. They are restless beings. That's their self destructive power for a short time only. They would carry out maximum spiritual damage, if possible.
Think of the many instances where destruction came that way in the past. In the book of Kings I & II and Samuel I & II, they are recorded in detail. Also in the books of the major and minor prophets of the Bible. Read them to know them. History repeats itself.