Sepir Ha Yasher, the Hebrew title of this book, means the 'Book of the Upright', or 'the Upright or Correct Record'. This title was misread as 'Jasher', and at some point Jasher was treated as a proper name; however the pronoun 'the' (hebrew 'ha') never preceeds proper names. The Book of Jasher (also spelled Jashar; Hebrew: סֵפֶר הַיׇּשָׁר, romanized: Sēfer haYyāšār), which means the Book of the Upright or the Book of the Just Man, is a lost book mentioned in the Hebrew Bible, often interpreted as a lost non-canonical book.

Understanding the Context

While the original Book of Jasher is lost to history, several works bearing its name have emerged over the centuries. The most notable versions include a medieval text written in Hebrew, published in the 18th century, and an English translation that followed. What Is the Book of Jasher and Why Is It Not in the Bible? Also known as the “Book of the Upright One” in the Greek Septuagint and the “Book of the Just Ones” in the Latin Vulgate, the Book of Jasher was probably a collection or compilation of ancient Hebrew songs and poems praising the heroes of Israel and their exploits in battle.

Key Insights

What is the Book of Jasher and should it be in the Bible? In recent years, books bearing the name “Jasher” have gained popularity, and some Internet personalities claim that one of these modern works is the real Book of Jasher mentioned in the Bible. It’s always good to get an understanding of what words mean and the same is true for the book of Jasher. The meaning of Jasher is from the he Hebrew “Yashar” and it means, “Upright”, or “Righteous”. The book is also called the “book of the upright”.

Final Thoughts