3 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.
The coming of Jesus at Christmas is a time of great joy and blessing. The prophecy of Isaiah foretells that the coming of the Messiah will be that time of rejoicing and in trying to describe what it will be like compares it to the happiness felt when a great harvest is brought in and people know they will now survive the winter without starving, or the joy of soldiers at a battle won. They have survived and now reap the fruits of victory. And we too are promised such delight, the joy of knowing salvation through Jesus Christ.
Lord we look forward to the day when in glory we will have the inexpressible joy of meeting you face to face.