«Tehilim», «Song of the Songs», «Ekklesiast» - these names, familiar to all, became sign in sphere of world culture, and in the Jewish tradition they, alongside with other books of a bible canon, formed group "Ketuvim". As an outstanding Israeli scientist Joel Vejnberg, considers as the main theme uniting this group, « the Person spiritual problems serve in the world of people »: love, grief, hope. Wide erudition and the strict comparative-historical approach (in modern library science even received the name «a Vaynerg's method») allows the author in a published fourth part of the fundamental work to take up more full and authentically many questions of formation and development of the Jewish tradition.