The document provides a detailed summary and analysis of how religion is used as a theme throughout the book "Clay's Quilt" by Silas House. Religion is used to explore the thoughts and emotions of characters at different points in the story. It represents both their spiritual states as well as periods of belief, skepticism, and hypocrisy. Various biblical passages and religious symbols like the dogwood tree further develop the theme. The author concludes that while religion is a significant theme, it does not serve as the central focus of the story.