The Virgin's Son

Καὶ τὸ Ἰδοὺ ἡ παρθένος ἐν γαστρὶ λήψεται καὶ τέξεται υἱὸν εἰς τοῦτον προείρητο. εἰ γὰρ μὴ ἐκ παρθένου οὗτος, περὶ οὗ Ἠσαίας ἔλεγεν, ἔμελλε γεννᾶσθαι, εἰς ὃν τὸ ἅγιον πνεῦμα ἐβόα· Ἰδοὺ κύριος αὐτὸς ἡμῖν δώσει σημεῖον· ἰδοὺ ἡ παρθένος ἐν γαστρὶ λήψεται καὶ τέξεται υἱόν; εἰ γὰρ ὁμοίως τοῖς ἄλλοις ἅπασι πρωτοτόκοις καὶ οὗτος γεννᾶσθαι ἐκ συνουσίας ἔμελλε, τί καὶ ὁ θεὸς σημεῖον, ὃ μὴ πᾶσι τοῖς πρωτοτόκοις κοινόν ἐστιν, ἔλεγε ποιεῖν; ἀλλ' ὅπερ ἐστὶν ἀληθῶς σημεῖον καὶ πιστὸν τῷ γένει τῶν ἀνθρώπων ἔμελλε γίνεσθαι, τοῦτ' ἔστι διὰ παρθενικῆς μήτρας τὸν πρωτότοκον τῶν πάντων ποιημάτων σαρκοποιηθέντα ἀληθῶς παιδίον γενέσθαι, προλαβὼν αὐτὸ διὰ τοῦ προφητικοῦ πνεύματος κατὰ ἄλλον καὶ ἄλλον τρόπον, ἀνιστόρησα ὑμῖν, προεκήρυξεν, ἵνα ὅταν γένηται δυνάμει καὶ βουλῇ τοῦ τῶν ὅλων ποιητοῦ γενόμενον γνωσθῇ· ὡς καὶ ἀπὸ πλευρᾶς μιᾶς τοῦ Ἀδὰμ ἡ Εὔα γέγονε, καὶ ὥσπερ τἄλλα πάντα ζῶα λόγῳ θεοῦ τὴν ἀρχὴν ἐγεννήθη. ὑμεῖς δὲ καὶ ἐν τούτοις παραγράφειν τὰς ἐξηγήσεις, ἃς ἐξηγήσαντο οἱ πρεσβύτεροι ὑμῶν παρὰ Πτολεμαίῳ τῷ τῶν Αἰγυπτίων βασιλεῖ γενομένῳ, τολμᾶτε, λέγοντες μὴ ἔχειν τὴν γραφὴν ὡς ἐκεῖνοι ἐξηγήσαντο, ἀλλ' Ἰδού, φησίν, ἡ νεᾶνις ἐν γαστρὶ ἕξει, ὡς μεγάλων πραγμάτων σημαινομένων, εἰ γυνὴ ἀπὸ συνουσίας τίκτειν ἔμελλεν, ὅπερ πᾶσαι αἱ νεάνιδες γυναῖκες ποιοῦσι πλὴν τῶν στειρῶν, ἃς καὶ αὐτὰς βουληθεὶς ὁ θεὸς γεννᾶν ποιῆσαι δυνατός. ἡ μήτηρ γὰρ τοῦ Σαμουὴλ μὴ τίκτουσα διὰ βουλὴν θεοῦ τέτοκε, καὶ ἡ γυνὴ τοῦ ἁγίου πατριάρχου Ἀβραάμ, καὶ Ἐλισάβετ ἡ τὸν βαπτιστὴν Ἰωάννην τεκοῦσα, καὶ ἄλλαι τινὲς ὁμοίως. ὥστε οὐκ ἀδύνατον ὑπολαμβάνειν δεῖ ὑμᾶς πάντα δύνασθαι τὸν θεὸν ὅσα βούλεται. καὶ μάλιστα, ἐπειδὴ ἐπεπροφήτευτο μέλλειν γίνεσθαι, μὴ παραγράφειν ἢ παρεξηγεῖσθαι τολμᾶτε τὰς προφητείας, ἐπεὶ ἑαυτοὺς μόνους ἀδικήσετε, τὸν δὲ θεὸν οὐ βλάψετε. Ἅγιος Ἰουστίνος Μάρτυς, Πρὸς Τρύφωνα Ἰουδαῖον Διάλογος Migne PG 6 673

And, 'Behold, the virgin shall conceive, and bear a son,' 1 was spoken about Him. For if He was not to be born from a virgin, concerning whom Isaiah spoke, of whom did the Holy Spirit cry out, 'Behold, the Lord Himself shall give us a sign: behold, the virgin shall conceive, and bear a son?' For if He also were to be begotten by intercourse like all other firstborn sons, then why did God say that He would give a sign which is not common to all firstborn sons? But that which is truly a sign, and which was to be made trustworthy to the race of men, that is, that the first begotten of all everything made through a virgin's womb would become incarnate and be a child, he anticipated by the Spirit of prophecy, as I have repeated to you in various ways, and predicted it, in order that when it came to be, it be known as the work of the power and will of the Maker of all things; just as Eve was made from a rib of Adam, and as all living beings were created in the beginning by the word of God. But in these matters you try to pervert the expositions which your elders gave in the time of Ptolemy king of Egypt, saying that the Scripture does not have the meaning as they explained it, but says, 'Behold, the young woman shall conceive,' as if great things were signified if a woman should give birth from sexual intercourse, which indeed all young women do, apart from the barren; but even these women, if God wills, He is able to make capable. For the mother of Samuel, who had not brought forth child, gave birth by the will of God, and also the wife of the holy patriarch Abraham, and Elisabeth, who bore John the Baptist, and other women like these. So that you must not suppose that it is impossible for God to do anything He wills. And most of all, when it was prophesied that this would be, you lot should not try to pervert or misinterpret the prophecies, since you will harm yourselves alone, not God. Saint Justin Martyr,  from The Dialogue With Trypho 1 Isai 7.14