Luke 4:5,6 And the devil, taking him up into an high mountain, shewed unto him all the kingdoms of the world in a moment of time. And the devil said unto him, All this power will I give thee, and the glory of them: for that is delivered unto me; and to whomsoever I will I give it.
We have no power, in and of ourselves. What we have is the Lord Jesus Christ in us (Col 1:27). The Lord Jesus Christ has been given a name which is above every name: That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth; And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father (Phil 2:9-11).
The Lord Jesus Christ has power over all and we know that greater is He that is in you than he that is in the world (1 John 4:4).