In the beginning was the Word, and the Word was with God, and the Word was God.He was in the beginning with God; all things were made through him, and without him was not anything made that was made . . . And the Word became flesh and dwelt among us, full of grace and truth; we have beheld his glory, glory as of the only Son from the Father. John 1:1-14
As far a belief in the ever-virginity of Mary, here is an excerpt from an Orthodox website:
Mary became the vessel for the Lord of Glory Himself, and bore in the flesh Him whom heaven and earth cannot contain. Would this not have been grounds to consider her life, including her body, as consecrated to God and God alone? Or it more plausible that she would shrug it all off and get on with keeping house in the usual fashion? Consider that the poetically parallel incident of the Lord's entry through the east gate of the Temple (in Ezekiel 43-44) prompts the call: "This gate shall be shut; it shall not be opened, and no one shall enter by it, for the Lord God of Israel has entered by it; therefore it shall be shut" (44:2).