Dickens wants to show the middle classes that the poor co-operate and show love through mutual support.
The fire represents the Cratchit’s Christmas spirit , which is strong throughout Stave three.
Bob carries the family financially, despite the heavy burden.
The Cratchit family are Christians who value love and family over materialism.
Bob values people according to their character, not their wealth.
Dickens exaggerates the Cratchit family’s reaction to emphasise how grateful they are. Ironically, the reader can clearly see the meal is not a 'feast’ and causes sympathy.
Scrooge continues to grow as a person, realising that value should not be attached to money. He asks if Tiny Tim will be "spared", showing he is now interested in other people.
The atmosphere is overflowing with positive Christian spirit which starkly contrasts with the desperate poverty of the family.
Scrooge is further shamed by the poverty of the Cratchits and their humility is a emphasised as they are grateful for everything they have.