chapter
chapter and verse an exact reference or authority.
☞ Chapter and verse was originally used to refer to the numbering of passages in the Bible. It is now also used more generally to refer to any (usually written) authority for something.
a chapter of accidents a series of unfortunate events.
☞ This expression was apparently coined by Lord Chesterfield in a letter to Solomon Dayrolles in 1753: 'The chapter of knowledge is a very short, but the chapter of accidents is a very long one'.