Shiu-Lun Shum studies Paul's use of the Isaianic tradition in Romans in comparison to that of the Jewish Sibyls and the Qumranites. The comparison helps to underscore the distinctive characteristics of the Apostle's use of this tradition. The author shows that Paul, along with the Sibyls and the Qumranites, expressed a deep concern about Israel's future in utilizing the Isaianic materials. Methodically, this study also exposes the precariousness of the notion of "intertextuality" in relation to biblical studies.