The Greek version of Sirach is found in many codices of the Septuagint.

As early as 1896, several substantial Hebrew texts of Sirach, copied in the 11th and 12th centuries, were found in the Cairo geniza (a synagogue storage room for damaged manuscripts). Although none of these manuscripts is complete, together they provide the text for about two-thirds of the Wisdom of Sirach. According to scholars including Solomon Schechter and Frederic Kenyon, this shows that the book was originally written in Hebrew.