Jerome
Catena Aurea · Matthäusevangelium 1
Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying, Behold, a Virgin shall be with child, and shall bring forth a Son, and they shall call His Name Emmanuel, which being interpreted is, God with us. Here we must enquire why he should say all this was done, when above he has only related the conception. It should be known that he says this to shew, that in the presence of God all this was done before it was done among men. Or he says, all this was done, because he is relating past events; for when he wrote, it was all done.
(ubi sup.) It should be known, that the Hebrews believe this prophecy to refer to Ezekias the son of Ahaz, because in his reign Samaria was taken; but this cannot be established. Ahaz son of Jotham reigned over Judæa and Jerusalem sixteen years, and was succeeded by his son Ezekias, who was twenty-three years old, and reigned over Judæa and Jerusalem twenty-nine years; how then can a prophecy prophesied in the first year of Ahaz refer to the conception and birth of Ezekias, when he was already nine years of age? Unless perhaps the sixth year of the reign of Ezekias, in which Samaria was taken, they think is here called his infancy, that is, the infancy of his reign, not of his age; which even a fool must see to be hard and forced. A certain one of our interpreters contends, that the Prophet Isaiah had two sons, Jashub and Emmanuel; and that Emmanuel was born of his wife the Prophetess as a type of the Lord and Saviour. But this is a fabulous tale.