the plight of the working poor

"The clerk put on his white comforter, and tried to warm himself at the candle; in which effort, not being a man of strong imagination, he failed."

depicts Bob's desperate attempt to stay warm with a candle, showcasing his lack of proper heating and the meager conditions of his workplace

"his threadbare clothes darned up and brushed to look seasonable."

describes Bob's clothes as worn and patched, highlighting their lack of new or nice clothing, a sign of their limited resources

"the clerk's fire was so very much smaller that it looked like one coal."

simile contrasts Bob's meager heating with Scrooge's ample fire, showing the stark inequality in their living standards

“there was never such a goose”

hyperbole used by Bob Cratchit to express his family's immense delight and gratitude for their Christmas dinner, particularly the goose. highlights the poverty of the Cratchit family and their appreciation for even the smallest of luxuries, demonstrating the transformative effect of Christmas spirit.