I believe the correct answer is "The cattle are lowing,/ The Baby awakes./ But the little Lord Jesus/ No crying He makes."
In the “Slaughterhouse-Five” Kurt Vonnegut uses lines from a Christmas carol “Away in Manage” as his epigraph:
“The cattle are lowing,
The Baby awakes.
But the little Lord Jesus
No crying He makes.”
This epigraph is usually considered for a reference for Billy Pilgrim (or Vonnegut himself) as he saw horrible things, but complained very little.