Isaiah 7:14; 9:2-3

Therefore the Lord himself will give you a sign: The virgin will conceive and give birth to a son, and will call him Immanuel.

The people walking in darkness have seen a great light;
on those living in the land of deep darkness a light has dawned.
You have enlarged the nation and increased their joy;
they rejoice before you as people rejoice at the harvest,
as warriors rejoice when dividing the plunder.