One book that tells Gandalf's story is 'The Hobbit'. It provides some background and initial encounters with Gandalf. Additionally, the expanded universe of Tolkien's works like 'Unfinished Tales' also offer more insights into his character and exploits.
The Lord of the Rings series by J.R.R. Tolkien features Gandalf and his adventures extensively.
The book 'The Silmarillion' by Tolkien has elements related to Gandalf's origin and the broader context of the world in which he exists. But for a more focused account of his specific story, 'The Lord of the Rings' is the main source.
You could try 'The Silmarillion'. It provides background and additional context related to Gandalf and the broader Tolkien universe.
I think 'The Adventures of Larry' might have his story. You could check it out.
There's 'The Secret of the Lion's Den' by Author Z. It weaves an engaging tale about the mysteries and happenings in the lion's den, keeping readers on the edge of their seats.
The book of Acts in the Bible contains significant accounts of Paul's story and his missionary journeys.
The Bible is a book that often features the story of Saul's salvation.
Gandalf originated from a higher spiritual plane. He was dispatched to Middle-earth with a purpose. His background involves being part of a divine order and having a responsibility to bring hope and resistance against evil.
The book that features the story of Job is the Book of Job within the religious text of the Bible. This book explores Job's trials and his quest for understanding and justice.
The book of Jonah in the Bible is the one that tells the story of Jonah. It's a well-known religious text.
The Book of Exodus in the Bible is one that prominently features the story of Moses.
It's hard to pinpoint one exact book, as different authors and cultures have retold the story of Goliath in their own ways. You might find relevant tales in ancient history or mythological collections.