Several years ago I gave a talk at Calvin College, about the two-book preaching method that was evolving in my mind and at our church. After I presented, someone came up to me and told me that Calvin Seminary’s Old Testament and Preaching professor, Sidney Greidanus, had been sitting in the back row. I swallowed hard when I heard that news. Dr. Greidanus was my pastor when I was a boy and I knew he held the bar very high when it came to orthodox preaching. That night I couldn’t help but wonder what he thought. ..