The first part of that prophecy is often applied to the birth of the Messiah, and rightly so.
قَالَ إِشَعْيَا :‏ « هَا إِنَّ ٱلصَّبِيَّةَ تَحْمِلُ وَتَلِدُ ٱبْنًا ،‏ وَتَدْعُو ٱسْمَهُ عِمَّانُوئِيلَ .‏ .‏ .‏ .‏