Joy to the World, the Lord has come!
Let earth receive her King;
Let every heart prepare Him room,
And Heaven and nature sing,
And Heaven and nature sing,
And Heaven, and Heaven, and nature sing.

Joy to the World, the Savior reigns!
Let men their songs employ;
While fields and floods, rocks, hills and plains
Repeat the sounding joy,
Repeat the sounding joy,
Repeat, repeat, the sounding joy.

He rules the world with truth and grace,
And makes the nations prove
The glories of His righteousness,
And wonders of His love,
And wonders of His love,
And wonders, wonders, of His love.

Joy to the World, the Lord has come!
Let earth receive her King;
Let every heart prepare Him room,
And Heaven and nature sing,
And Heaven and nature sing,
And Heaven, and Heaven, and nature sing.

http://www.youtube.com/watch?v=ATqL4_8A_yc

²⁰ Very truly I tell you, you will weep and mourn while the world rejoices. You will grieve, but your grief will turn to joy. ²¹ A woman giving birth to a child has pain because her time has come; but when her baby is born she forgets the anguish because of her joy that a child is born into the world. ²² So with you: Now is your time of grief, but I will see you again and you will rejoice, and no one will take away your joy.
³³ “I have told you these things, so that in me you may have peace. In this world you will have trouble. But take heart! I have overcome the world.”
John 16: 20-22, 33

Let every heart prepare Him room for the wonders of His love.  He has come to turn our grief to a joy that no one will take away.
It is no longer “we will overcome” but “we are overcome”  with truth and grace.