Paul criticizes Jews for their failure to believe that Jesus was the Messiah (Romans 9:30–10:13) and for their view about their favored status and lack of equality with gentiles (Roman 3:27). In Romans 7–12, one criticism of Judaism made by Paul is that it is a religion based in law instead of faith. In many interpretations of this criticism made prior to the mid 20th century, Judaism was held to be fundamentally flawed by the sin of self-righteousness. The issue is complicated by differences in the versions of Judaism extant at the time. Some scholars argue that Paul's criticism of Judaism are correct, others suggest that Paul's criticism is directed at Hellenistic Judaism, the forms with which Paul was most familiar, rather than Rabbinic Judaism, which eschewed the militant line of Judaism which Paul embraced prior to his conversion. There is also the question as to whom Paul was addressing. Paul saw himself as an apostle to the Gentiles, and it is unclear as to whether the text of Romans was directed to Jewish followers of Jesus (as was Paul), to Gentiles, or to both. If adherence to Jewish law were a requirement for salvation, then salvation would be denied to Gentiles without a conversion to Judaism. Krister Stendahl argues along similar lines that according to Paul, Judaism's rejection of Jesus as a savior is what allows salvation of non-Jews, that this rejection is part of God's overall plan, and that Israel will also be saved (per Romans 11:26–27).