Why does Charles Dickens uses repetitions in Christmas carol?

Answer 1

Because carols when sung have repetitions. Dickens followed on with the song format despite the story being a novel in its own right. He would for instance revisit tiny time saying "God Bless Us one and all"

Answer 2

Charles Dickens uses repetitions in "A Christmas Carol" to emphasize key themes and ideas, create a rhythm in the storytelling, and make certain passages more memorable to readers. By repeating phrases and motifs throughout the text, Dickens reinforces the importance of redemption, generosity, and forgiveness in the story.