“That Firstborn Who was begotten according to His nature, was born in another birth that was external to His nature; that we might know that after our natural birth we must have another birth which is outside our nature. For He, since He was spiritual, until He came to the corporeal birth, could not be corporeal; in like manner also the corporeal, unless they are born in another birth, cannot be spiritual.” St. Ephraim, Homily on Our Lord  (Translated by A. Edward Johnston. From Nicene and Post-Nicene Fathers, Second Series, Vol. 13. Edited by Philip Schaff and Henry Wace. (Buffalo, NY: Christian Literature Publishing Co., 1898.))