Final answer:
The introduction of 'The Leper's Squint' provides a significant childhood incident, initiates expectations for the narrative, and highlights transformative moments and emotional sermons that influence characters deeply.
Step-by-step explanation:
The introduction in the story of The Leper's Squint sets up crucial expectations for the reader by presenting an intriguing incident from the narrator's childhood involving a 'fearful man'. This early encounter in a churchyard is portrayed with vivid detail and significance, hinting at the greater relevance this episode will hold in the unfolding narrative. Furthermore, the introduction highlights the transformational impact of teachers and the pivotal moments that divide life into distinct parts, mirroring Helen Keller's experience as described in her literacy narrative.