Continuing the discussion of the advantages of being Jewish, Paul says directly that there are no such advantages. Of course, he is speaking not about religious advantages, but about spiritual ones in the proper sense. This is not about any tradition, any theology, or even any knowledge of the Torah as a text. An advantage in the spiritual sense could belong only to someone able to live without sinning, but in our fallen world, regrettably, there are no such people (v. 9).
To support his thought, the apostle cites the words of an ancient psalm that vividly describes human sinfulness (vv. 10-18). To this, of course, one could always object that the Torah did not require sinlessness from a person; it only required the right choice in a concrete situation, a choice that would conform to the norms of the Torah. But in this case Paul is, as can be seen, arguing with those who were sure that one could be freed from sin and enter the Kingdom by doing what the apostle in Greek calls "works of Torah" or "works of the Law" (v. 20).
The reference is apparently to what in Hebrew is called a mitzvah, literally translated as "command" or "commandment." In Paul's time, however, in the Jewish world it had begun to mean what we today usually call religious obligations. With this understanding of commandment, observance of the Torah was reduced to the performance of numerous religious obligations, some of which found a basis in the text of the Torah, while others rested solely on the rabbinic tradition that existed at that time.
Here one can see a polemic, not very noticeable at first glance, with another well-known rabbinic school: the school of Shammai, with whose representatives the followers of Hillel held constant discussions. Shammai was the one who was sure that the performance of religious obligations in itself sanctifies and purifies a person. But the apostle puts the emphasis elsewhere. He says that the Torah is not meant for competing with one another in the fulfillment of a multitude of religious obligations. It is needed in order, in Paul's words, "to know sin," that is, to learn to distinguish sin from righteousness and to see what hinders a person on the way to the Kingdom (v. 20). The Torah is not a magic wand that opens the gates of the Kingdom for the one who possesses it; it is more like a compass that helps one stay on the path of righteousness. Any other use of it makes the Torah useless, and hopes for its effectiveness illusory.
