Verse 15 The work of the law; the work or duty required by the law.--Their conscience also bearing witness. All the writings of the ancient pagans show, most decisively, that, notwithstanding the great prevalence of practical iniquity, there was a clear and universal understanding among them of the great distinctions between right and wrong. The vices and crimes enumerated by the apostle, though every where practised, were still every where understood to be vices and crimes. As such, they were denounced by the philosophers, satirized by poets, and forbidden by the laws; and thus there is abundant evidence that when the people committed such iniquity themselves, or encouraged it in others, they did or encouraged what they distinctly and certainly knew to be wrong.