O Come, O Come Emmanuel is my favorite Christmas carol. I love to begin Advent by playing this beautiful song every night, reminding me that God is always with me. Isaiah 7:14 and Matthew 1:23. Matthew quotes Isaiah virtually verbatim—“Behold, a virgin shall conceive, and bear a son, and shall call his name Emmanuel”—with the exception that Matthew adds the phrase: “which being interpreted is, God with us.”