the book of Jasher. Why may not this be "the book of the Upright", another name for Israel, like Jeshurun? See note on Deu_32:15. Is. It is so in Arabic and Syriac. It is mentioned in 2Sa_1:18. In the Targum it is "the book of the Law". Josephus appeals to it as a book in the temple, which probably perished with it. Two spurious books so called, A.D. 1394 and 1625.