In reference to this verse, the following appears in A Catholic Commentary on Holy Scripture, ed. by Bernard Orchard, et al., pub. by Thomas Nelson & Sons:1953, page 584:And then a great sign is promised, so great that it is even called a creation. The verb is in the perfect tense (‘hath created’), but it is generally admitted that this is merely another example of the well-known idiom, the ‘prophetic perfect’, a vivid manner of representing a prophecy as already fulfilled. The present writer [C. Lattey, S.J.] accepts Knabenbauer’s explanation in CSS [Cursus Scripturae Sacrae, Paris, 1890- ], which he regards as far more plausible than any other, but of course it presupposes that miracle and prophecy are possible. Instead of the initiative being taken by the man, as is usual in human generation, the physical process on the purely human side will be set on foot by the woman, who will ‘press round’ a man (a meaning given by BDB Hebrew and English Lexicon, ed. Brown, Driver and Briggs, Oxford, 1906] to the verb in this passage, but with a different implication). The miracle is emphasized by the word used for ‘woman’ being an unusual one, which stresses the sexual character. The word for ‘man’ (that found in Gabri-el ‘man of God’) is also an unusual one, implying strength and power; a cognate word (a fact significant in the present context) is applied as a name to the Messias in Is 9:6 [Isaiah 9:6] (‘God the Mighty’), and directly to God himself in Ps 23:8 [Psalm 23(24):8] (twice); Deut 10:17; etc. This explanation of the passage is confirmed by the fairly obvious reference which it contains to Is 7:14 [Isaiah 7:14: ‘Behold, a virgin shall conceive and bear a son’], which can reasonably be supposed to have been familiar to Jeremias’ hearers and readers, as to those of Mic 5:3 [Micah 5:3], immediately after the mention of Bethlehem. Like Isaias, Jeremias passes easily by a process of compenetration from the temporary deliverance to the full Messianic deliverence of which it is a type.
If, as the above commentary suggests, the man in the passage is the Messiah, Jesus Christ, then the obvious implication is that the woman in the passage is the Messiah’s mother, the Virgin Mary.