DID YOU KNOW?
The answer
The Book of the Wars of the Lord. Numbers 21:14 says, "Wherefore it is said in the Book of the Wars of the Lord," and then quotes lines about dry stream valleys and the border of Moab.
Why it’s interesting
That book no longer exists. The lines in Numbers 21:14-15 are all the Bible keeps of it.
Scholarly consensus
Learn the Bible.
Not just the stories, but the history, authorship, and scholarship behind it.