The book of Psalms with 150 chapters and also the longest book in the entire Bible.
Psalm 119
Maharshalalhashbaz: This name occurs twice in the book of Isaiah in the Old Testament of the KJV Bible, in chapter 8.1 & 3 This also is the longest word and the longest name in the Bible.
It is the book of Isaiah.
In the Old Testament, the Book of Psalms.
The book from the old testement with only on chapter is Obadiah
Obadiah is the shortest book in the Old Testament, having only one chapter.
Chapter 7
The prophecy of Obadiah (the book is 21 verses).
In terms of both chapters and verses, it is the Psalms.
Isaiah
It is the book of the prophet Obidah , which only has one chapter in it.
The book of Obadiah in the Old Testament has only 2 chapters. It is the shortest book in the Old Testament and focuses on a prophecy against the nation of Edom.