There is much history associated with this very popular Polish Christmas carol that is considered by some to be the National Christmas Hymn of Poland. You can read about the history of the song here.
The lyrics in English go something like this... (with the help of Google Translate)
God is born on earth, powers tremble;
Lord, bereft of heav'nly splendor,
Lustrous flames fade, fires dissemble,
Infinite unending wonder!
Scorned yet clothed in radiant glory,
Mortal though he is Lord Jesus,
Refrain: Thus the Word became the flesh,
Dwelling without end among us!
Why leave heaven for this bleak earth,
Heaven bright in all its glory,
To dwell humbly from day of birth,
To fulfill the prophet's story.
Lo, He suffered through our folly,
Mortal, though He is Lord Jesus,
Born in the squalid shack,
Manger was given to him as the cradle!
What is it, what it was surrounded,
Cattle, shepherds and hay.
Poor, you are met,
To greet him before the rich!
Raise your hand, O God
Bless our homeland.
In the good counsel and good living,
Support her with your power.
Our house and all possessions
And all the villages and towns.
Christmastime is here! Rejoice and be glad!