The discovery of the Dead Sea Scrolls in the middle of the last century, together with the mining of the ancient texts found in the Cairo Genizah, has given scholars access to a wide range of Jewish religious texts composed in the approximately four centuries between the end of the biblical period and the composition of the Mishnah (the earlier stratum of the Talmud) around 200 CE. In Outside the Bible, three distinguished scholars of ancient Judaism have brought together translations of these works. Hindy Najman writes in her review:
Prior to the discovery of the Dead Sea Scrolls, scholars assumed that there was some kind of closing of the canon in the Maccabean period [the 3rd and 2nd centuries BCE] or even slightly later, in the 1st century CE. References to the 24, or 22, books or occasional allusions to the end of prophecy were often cited to justify this hypothesis. Of course, this presupposed that there was already something like a canon, a set of texts that approximated our present-day Tanakh, or Hebrew Bible, and that other ancient Jewish texts stood outside of this collection.
What the biblical manuscripts discovered at Qumran definitively showed was that the canon didn’t close in the Second Temple period, indeed that it is anachronistic to think in these terms. Texts such as Jubilees show that new works were being written that continue to make comparable claims [about their own importance and sanctity] to Deuteronomy and Chronicles, while others, such as Philo’s Questions and Answers on Genesis and Exodus, interpret and develop already established authoritative biblical works. This demonstrates both that biblical books were being authorized and stabilized on the one hand and that there was ongoing and continuous writing of texts that can only be described as biblical on the other. Revelation did not end with the advent of interpretation.
The [old] schematic understanding of the history of Judaism as occurring in two [distinct] phases—first the Bible and then rabbinic interpretation of the Bible—is, in short, deeply mistaken.