How does Dickens use representations of speech and other stylistic techniques to create a sense of threat and menace in the following extract, and in one other episode elsewhere in the novel?

Dickens uses Magwitch in the extract, and throughout the novel, to create a sense of threat and menace. The first part of dialogue we hear from Magwitch shows the reader he is going to be a threat, “Keep still, you little devil, or I’ll cut your throat!” The use of the imperative command ‘keep still’ shows dominance to Magwitch, we can see he is going to be a powerful, superior character to Pip who is quite submissive. As the reader has already created a sense of empathy with Pip before this extract the reader becomes protective over Pip, so when Magwitch is aggressive towards him it automatically shows him as the ‘enemy’. Magwitch addresses Pip as ‘you little devil’ this vocative is derogatory and shows Magwitch’s and probably most Victorian’s view towards children. The use of the exclamatory statement ‘I’ll cut your throat!’ shows an aggressive intonation and threat, ‘cut’ is an emotive lexical choice and Dickens wants the reader to feel fearful like Pip would. Magwitch is a physical threat to Pip here.
Then, Dickens uses a syndetic list to describe Magwitch as “a man who had been soaked in water, and smothered in mud, and lamed by stones, and cut by flints, and stung by nettles, and torn by briars’ the lexical choices of the list show; sibilance, ‘soaked..and smothered’, bilabial, ‘mud...by briars’ and fricatives, ‘flints’. The sibilance creates a hissing sound and fricatives create harshness, both of these make an aggressive lexical set, this suggests an aggression surrounding Magwitch. The use of a sydentic list suggests the bad events happening to the ‘man’ are never ending, and so are the bad things about him. All of the descriptions are due to forces of nature