Римлянам 2:13

For not the hearers, &c.--As touching the Jews, in whose ears the written law is continually resounding, the condemnation of as many of them as are found sinners at the last involves no difficulty; but even as respects the heathen, who are strangers to the law in its positive and written form--since they show how deeply it is engraven on their moral nature, which witnesses within them for righteousness and against iniquity, accusing or condemning them according as they violate or obey its stern dictates--their condemnation also for all the sin in which they live and die will carry its dreadful echo in their own breasts.

The scope of the first two chapters of this epistle may be gathered from Rom 3:9, "We have before proved both Jews and Gentiles that they are all under sin." This we have proved upon the Gentiles (ch. 1), now in this chapter he proves it upon the Jews, as appears by Rom 2:17, "thou art called a Jew." I. He proves in general that Jews and Gentiles stand upon the same level before the justice of God, to Rom 2:11. II. He shows more particularly what sins the Jews were guilty of, notwithstanding their profession and vain pretensions (Rom 2:17 to the end).

2:13 obeying the law . . . makes us right in his sight: Regarding the promise of righteousness through obedience, see 2:7; see also Jas 1:22.