Completeness in Christ

Col 2:9-10

9 For in Him the whole fullness of Deity (the Godhead) continues to dwell in bodily form [giving complete expression of the divine nature].
10 And you are in Him, made full and having come to fullness of life [in Christ you too are filled with the Godhead--Father, Son and Holy Spirit--and reach full spiritual stature]. And He is the Head of all rule and authority [of every angelic principality and power].
AMP  

My comments:

Christ is the ultimate expression of the Godhead in a physical body. As such, because we are members of the Body of Christ, we too have the Godhead dwelling in us And because He [being Christ] is the head of every angelic principality and power, it means that everything is subject to Him. Therefore, they are also subject to us as we are members of His Body, He being the Head.  

Confession:

The Godhead dwells in me, because I am in Christ. Demons are subject to Him, as He is above them. Therefore they are subject to me because I am in Him!