Functional subordination

And we see, moreover, how functional subordinationists read ghosts of subordination into every little thing. The Father gave the Son; therefore the Son is subordinate. The Father sent the Son; therefore the Son is subordinate. The world was made through the Son; therefore the Son is subordinate. But we have seen these claims before; we battled them in the Eunomians sixteen hundred years ago. They were no more plausible then. The Father sent the Son, yes, but 'to send' tells us nothing of authority. A child may say to his parent, "Go and see how well I have cleaned my room." The parent goes; and, behold, in going, the parent is sent. But this tells us nothing of who has the greater authority. My friend and I are in perfect agreement that she should help you on some matter; I say to you, "I am sending you my friend to help you." Have I arrogated an authority over my friend? Hardly, for my purpose does not rule the agreement. Was I lying? Certainly not, for I am sending my friend. This supposed proof is dubious in our own case; shall we think it conclusive in God's? It is even less likely to be legitimate there. For if I and my friend are in perfect agreement, it can be nothing in comparison to the agreement of the Father and the Son and the Spirit, who are so united that the work of the Father is through the Son and in the Spirit, so that one and the same action belongs to three persons, whether it pertains to creation or salvation. What human unity of purpose could possibly compare? But in unity of purpose, as such, there is no subordination; if there were subordination there would not be unity, but one purpose subordinating another purpose, however congenially. And so if the Father gives the Son, and this giving is eternally purposed by the Thrice-Holy Trinity, there is no subordination in being given, for there is no subordination of purposes, only a perfect unity of purpose: that the Word be made flesh and come among us a Savior, a gift of life. Thus from the mission of the Son, nothing follows about subordination. And likewise from the making of all things through the Son, nothing follows about subordination; indeed, the reverse: for that all things are made through the Son shows clearly that the Son is one with the Father with a unity that we can scarcely comprehend. 

http://branemrys.blogspot.com/2006/03/against-new-subordinationists.html