Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.
All Commentaries on Isaiah 7:14 Go To Isaiah 7
Jerome
AD 420
By no means will God speak in many and various ways, according to the apostle Paul, nor according to another prophet will he be represented through the hands of the prophets, but he who previously spoke through others will himself say “Here I am.” The bride in the Song of Songs also asked in this regard: “O that you would kiss me with the kisses of your mouth!” For “the Lord of hosts is himself the King of glory.” He will descend to a virginal womb and will enter and exit through the eastern gate that always remains closed, concerning which Gabriel said to the virgin: “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the one who will be born to you is holy and will be called the Son of God.” And Proverbs writes, “Wisdom built itself a home.” Thus when it is said, “The Lord himself will give you a sign,” this should refer to something new and marvelous.