The present exegetical study in the Hebrew and Greek versions of Sirach 50 deals with the wisdom tradition, personified in Simon the High Priest, who is called "e;the Just"e; in the rabbinical tradition. As a genuine eyewitness Ben Sira offers proof of Simons significance in the re-building of Jerusalem as climax of the Praise of the Fathers on Rosh Hashanah. His re-writing of Israels history ends with a polemic against the legality of the Samaritan temple and a direct allusion to the author's name.The volume examines three new pictures of the original Geniza-fragments found in 1896. The comparison of both versions provides an impressive picture of the development of Israels religion in the Second Temple period from 200-132 BCE.