The Greek word “Power” is exousia. It speaks of the right to use spiritual power. So, if you are a son of God and you don’t use this exousia, don’t chastise and criticize those who do. Spiritual power is the right of every son of God. When Jesus sent out the twelve, He gave them power over all devils, and to cure diseases.” (Luke 9:1) And later in the next chapter, we see the Lord sending out another group of seventy. And He said, Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.” (Luke 10:19)
If spiritual power was not a necessity for sons, Jesus would not empower anyone He sent out. The same way He sent them out; He has also sent us to perform miracles in His name. He has sent us to defeat the demonic strongholds of the devil in the marketplace, in our schools, communities and our families, so we can live victoriously in this world.