The Adult Sunday School class at Oakridge Bible Chapel took a couple of weeks in the winter of 2023 to study the Old Testament book of Haggai. God has said that all Scripture is inspired by him and useful for us, that we may be equipped for every good work (2 Tim 3:16–17). That "all" necessarily includes the relatively obscure sections of the Bible, such as the post-exilic prophets! This series explores how that is so.