A critical book review, a sermon, and a personal letter are different forms of communication. They follow different rules of grammar and syntax, and the form inevitably affects the selection of words. The form also creates certain expectations on the part of the reader. When readers turn to the book review section of a theological journal, they don’t expect to read a sermon, however much they might be helped by one. When a pastor stands to preach, people in the congregation expect a certain form
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