Perhaps a justification for pi-epnevma in a wedding. Like @minatasgeel said about authority in ordinations/consecrations. Could the hymn be meant for the groom, "he is the head of the wife... He is the leader. He represents the principle of authorit…
I know it's been a while since you've asked, but I recently read a paper about the history of liturgical vestments. I don't think it directly answers your question, but still quite interesting. :)
https://www.academia.edu/34133223/_Towards_a_History…