Smith's Bible Dictionary
Imman'uel. That is, God with us, the title applied by the apostle Matthew, to the Messiah, born of the Virgin, Matthew 1:23; Isaiah 7:14, because Jesus was God united with man, and showed that God was dwelling with men.
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Smith, William, Dr. Entry for 'Immanuel'. Smith's Bible Dictionary. https://www.studylight.org/dictionaries/eng/sbd/i/immanuel.html. 1901.