Christophe Rico and Peter J. Gentry discuss Isaiah 7:14; concludes that the prophecy concerning the virgin conceiving is set in the distant future.
Christophe Rico and Peter J. Gentry, The Mother of the Infant King, Isaiah 7:14: ‘almâ and parthenos in the World of the Bible, a Linguistic Perspective (trans. Peter J. Gentry; Eugene, OR: Wipf and Stock, 2020), 178-217
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Conclusion
Careful attention to the pronouns and person of the verbs reveals for and to whom the sign is given. Analysis of the textual transmission for וְקָרָאת in Isaiah 07:14 along with lexical analysis of קיץ and the syntax in Isaiah 7:16 gives stronger support for the analysis of עַלְמָה by Rico. The textual transmission of Proverbs 30:19 has been clarified further. In the larger structure of Isaiah, we see a switching back and forth between promises for the distant future and promises for the near future. The exegesis points to interpretation of Isaiah 7:14 as a direct prediction for the distant future.