Matthew 1:23 uses Greek parthénos virgin, whereas only the Hebrew of Isaiah 7:14, from which the New Testament ostensibly quotes, as Almah young maiden. See article on parthénos in Bauer/(Arndt)/Gingrich/Danker, "A Greek-English Lexicon of the New Testament and Other Early Christian Literature", Second Edition, University of Chicago Press, 1979, p. 627.
