The greatest example of redemption in A Christmas Carol comes when Scrooge wakes up on Christmas morning as a man transformed. After receiving all those visits from the spirits the night before, old Ebenezer has finally seen the error of his ways. No longer a mean, nasty old skinflint, Scrooge is now ready to gorge himself silly on the milk of human kindness.
Not long after waking up, Scrooge sends a young street urchin off to the poultry shop to fetch him a nice big turkey, which he intends to give to the Cratchit family. Scrooge further redeems himself by promising the boy the princely sum of half-a-crown if he brings back the turkey in under five minutes.
After Scrooge heads out into the street, the encounters a charity collector whom he'd rudely dismissed the day before. This time, Scrooge is all smiles as he happily agrees to give the man a generous charitable donation. As one can imagine, the charity collector is somewhat shocked but grateful for such an unexpected windfall.
Scrooge's redemption is completed by two further acts of kindness. First of all, he shows up at his nephew Fred's house for a spot of Christmas lunch. Only the day before Scrooge had sent Fred packing with a flea in his ear after he came by to invite his uncle over for dinner. But now, Scrooge is the life and soul of the party as he enthusiastically joins Fred, his wife, and their guests, for their Christmas celebrations.
The following day, Scrooge shocks and surprises his long-suffering employee Bob Cratchit by giving him a substantial raise. By this act of reparation, Scrooge achieves total redemption and ensures that poor old Tiny Tim will live on to fight another day.