Why Do Orthodox Christians Call Mary the Theotokos?

Orthodox Christians refer to the Virgin Mary by a number of different titles. The two most common are Theotokos and Mother of God. But why do we use these titles instead of simply referring to her as Mary—or Mary the Mother of Jesus? The short of it, is that the titles we give to Mary reflect our Christology; the titles we use for her are important in safeguarding the doctrine of Jesus Christ, who is fully man and fully God. I have written elsewhere about this topic and a little bit of the history behind it. But check if you are not really into reading about it, at least check out the video below.