Ezequiel 44
John Damascene
Ezequiel 44:1-2
But just as He who was conceived kept her who conceived still virgin, in like manner also He who was born preserved her virginity intact, only passing through her and keeping her closed. [Ezekiel 44:2] The conception, indeed, was through the sense of hearing, but the birth through the usual path by which children come, although some tell tales of His birth through the side of the Mother of God. For it was not impossible for Him to have come by this gate, without injuring her seal in anyway. The ever-virgin One thus remains even after the birth still virgin, having never at any time up till death consorted with a man. — An Exposition of the Orthodox Faith (Book IV), Chapter 14
Ezequiel 44:3
Without seed the Son of God was conceived of the Holy Spirit, and in the Virgin's womb he formed for himself a fleshly body, animate with a reasonable and intelligent soul. From it [he came] forth in one substance but in two natures, perfect God and perfect man. It preserved undefiled, even after birth, the virginity of her that bore him. Being made of like passions with ourselves in all things, yet without sin, he took our infirmities and bore our sicknesses. For, since by sin death entered into the world, he who was to redeem the world had to be without sin, and not by sin subject to death. — BARLAAM AND JOSEPH 7