Matthew Poole's Concise Commentary
Isaiah 7:14
Therefore; because you despise me, and the sign which I now offer to you, God of his own free grace will send you a more honourable messenger, and give you a nobler sign, to try whether that will cure you of your infidelity. Or, nevertheless, as this particle seems to be understood, Isaiah 30:18 Jeremiah 16:14, Jeremiah 30:16. Although you deserve no sign nor favour, yet, for the comfort of those few believers which are among you, and to leave you without excuse, I shall mind you or another and a greater sign, which God hath promised, and will in his due time perform; which also is a pledge of the certain accomplishment of all God's promises. Or, surely, as this particle is sometimes used, as Genesis 4:15 Jeremiah 2:33, Jeremiah 5:2 Malachi 11:7. A sign, to wit, of your deliverance. Quest. How was this birth of a virgin, which was not to come till many ages after, a sign of their deliverance from the present danger? Answ.
1. Because this was a clear demonstration of God's infinite power, and goodness, and faithfulness, and consequently of the certain truth of all God's promises from time to time, which can never fill so long as those attributes of God stand; and men's faith is either strong or weak, as they believe them or doubt of them; of which see Psalms 77:8, Psalms 78:19,20 Ro 4:20,21. And so this was a proper remedy for Ahaz's disease, which was a secret suspicion that God either could not or would not deliver them.
2. Because that promise, I say not only the actual giving, which was long after, but even the promise, of the Messiah, which had been made long since, and oft renewed, and was universally believed by all the people, was the foundation of all God's mercies and promises unto them, 2 Corinthians 1:20, and a pledge of the accomplishment of them.
3. Because this promised birth did suppose and require the preservation of that city, and nation, and tribe, in and of which the Messiah was to be born; and therefore there was no cause to fear that utter ruin which their enemies now threatened to bring upon them.
4. This is one, but not the only sign here given, as we shall see at Isaiah 7:16. Behold; you who will not believe that God alone is able to deliver you from the united force of Syria and Israel, take notice, for your full satisfaction, that God is not only able to do this work, but to do far greater and harder things, which he hath promised, and therefore both can and will accomplish. A virgin; strictly and properly so called. The Jews, that they may obscure this plain text, and weaken this proof of the truth of Christian religion, pretend that this Hebrew word signifies a young woman, and not a virgin. But this corrupt translation is easily confuted,
1. Because this word constantly signifies a virgin in all other places of Scripture where it is used, which are Genesis 24:43, compared with Isaiah 7:16 Exodus 2:8 Psalms 68:25 Song of Solomon 1:3, Song of Solomon 6:8; to which may be added Proverbs 30:19, The way of a man with a maid, or a virgin: for though it be supposed that he did design and desire to corrupt her, and afterwards did so; yet she may well be called a virgin, partly because he found her a virgin, and partly because she seemed and pretended to others to be such, which made her more careful to use all possible arts to preserve her reputation, and so made the discovery of her impure conversation with the man more difficult, whereas the filthy practices of common harlots are easily and vulgarly known.
2. From the scope of this place, which is to confirm their faith by a strange and prodigious sign, which surely could not be not a young woman should conceive a child, but that a virgin should conceive, &c. Bear a Son; or rather, bring forth, as it is rendered, Matthew 1:23, and as this Hebrew word is used, Genesis 16:11, Genesis 17:19 Judges 13:5. And shall call; the virgin, last mentioned, shall call; which is added as a further evidence of her virginity, and that this Son had no human father, because the right of naming the child (which, being a sign of dominion, is primarily in the husband, and in the wife only by his consent or permission, as is evident from Genesis 5:29, Genesis 35:18 Luke 1:60,63, and many other places of Scripture) is wholly appropriated to her. Immanuel; which signifies, God with us; God dwelling among us, in our nature, 1 Thessalonians 1:14, God and man meeting in one person, and being a Mediator between God and men. For the design of these words is not so much to relate the name by which Christ should commonly be called, as to describe his nature and office; as we read that his name shall be called Wonderful, Counsellor, &c., Isaiah 9:6, and that this is said to be his (the Messiah s) name whereby he shall be called, The Lord our Righteousness, Jeremiah 23:6, although he be never called by these names in any other place of the Old or New Testament; but the meaning of these places is, He shall be wonderful, and our Counsellor, &c., and our Righteousness; for to be called is oft put for to be, as Isaiah 1:26, Isaiah 4:3, &c.