This volume is a revised and enlarged version of the author's Ph.D. dissertation (1999). It gives a comprehensive analysis of the morphosyntax and syntax of the tenses in the Hebrew text of Ben Sira. Due attention is paid to the heterogeneous character of the textual evidence (three manuscripts from the Desert of Judah and six mediaeval manuscripts from the Cairo Geniza), which complicates any linguistic study of Ben Sira. A descriptive analysis is complemented by a comparison with other contemporaneous, earlier, and later forms of Hebrew. It is argued that the Hebrew of Ben Sira is a literary language in its own right, rather than an imitation of Biblical Hebrew or a predecessor of Mishnaic Hebrew.