In terms of syntax, the main clause has been placed at the end of the sentence to demonstrate the results of their actions. The brevity of the main clause is emotive and represents Tiny Tim's short life. The modal verb 'will' conveys certainty making it more emotive and persuades Scrooge that his transformation is urgently needed to save the boy. Child mortality was very high and this was due to the terrible living conditions for the poor who struggled to live on low wages