Five discourses on the moral obligation and the particular duties of the Sabbath This book, "Five discourses on the moral obligation and the particular duties of the Sabbath", by A.O. Hubbard, is a replication of a book originally published before 1843. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.