Jesus Christ is “far above all principality and power and might and dominion, and every name that is named, not only in this age but also in that which is to come. And He [God] put all things under His [Jesus Christ's] feet, and gave Him [Jesus Christ] to be head over all things to the church, which is His [Jesus Christ's] body, the fullness of Him [Jesus Christ] who fills all in all.”
In this context, principality is the Greek word that speaks of the highest ranking rulers in the demonic realm. Power is the word which means the exercise of authorized power or authority, specifically the spiritual authority which was relinquished by Adam and conferred to Satan. The word 'might' is referring to the inherent power in the adversary's domain. Finally, the word dominion here means mighty ones. This exquisite portion of Scripture establishes Jesus' exalted position, far above all. Period.
The J. B. Phillips New Testament in Modern English translates these Scriptures in this way: God “gave Him the place of supreme honor in heaven's place that is infinitely superior to any conceivable command, authority, power or control, and which carries with it a name far beyond any name that could ever be used in this world or the world to come.” God elevated Jesus Christ so far above all of the Devil's evil sphere of influence, and put that entire domain under the feet of Christ.
Christians are members of the Body of Christ, with Christ as the Head, therefore the Devil and all of the wicked spirits in his forces are all under Christian's feet, too. Although the adversary's realm is still active, though operating illegally, God has thoroughly equipped Christians, and technically, they have much greater potential power available to withstand and defeat adversarial onslaughts. Christians need to learn about their spiritual body armor and apply God's Word!
Colossians speaks of Christ as the preeminent One, which having presented the truths in Ephesians, becomes so obvious. The Amplified Bible communicates this portion of Scripture beautifully. “He also is the Head of [His] body, the church; seeing He is the Beginning, the Firstborn from among the dead, so that He alone in everything and in every respect might occupy the chief place [stand first and be preeminent]. For it has pleased [the Father] that all the divine fullness (the sum total of the divine perfection, powers, and attributes) should dwell in Him permanently.” (1:18, 19)
In John 3:31, John the Baptist spoke about Jesus. “He who comes from above is above all; he who is of the earth is earthly and speaks of the earth. He who comes from heaven is above all.” John spoke accurately of the One Who came to fulfill all of the more than 300 prophecies concerning Him.
“Therefore God also has highly exalted Him and given Him the name which is above every name, that at the name of Jesus every knee should bow, of those in heaven, and of those on earth, and of those under the earth, and that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.” (Philippians 2:9-11)
The great design of the Word of God is Christ. Apart from Jesus Christ, the Bible cannot be understood. He is the subject of every book of the Bible, sometimes obscured, but usually plain to see. The Scriptures testify of Christ, “of Whom Moses in the law and the prophets did write,” the Word made flesh, God with us. (John 5:39; 1:45; 1:14; Matthew 1:23) Jesus Christ is the centerpiece of all time, mankind's champion, giver of life and destroyer of death, humanity's hope, Lord of lords and King of kings.
“And behold, I am coming quickly, and My reward is with Me, to give to every one according to his work. I am the Alpha and the Omega, the Beginning and the End, the First and the Last. I, Jesus, have sent My angel to testify to you these things in the churches. I am the Root and the Offspring of David, the Bright and Morning Star.” (Revelation 22:12, 13, 16)