""A Discourse in Two Parts"" is a book written by Timothy Dwight, which was originally delivered as a speech on July 23, 1812, at the Chapel of Yale College. The speech was given during a public fast, which was a solemn day of prayer and fasting observed by the American people during times of national crisis. The book is divided into two parts, with the first part focusing on the reasons for the public fast and the second part on the duties and responsibilities...