Romans 2:3

Verse 3. And thinkest thou, etc. This is an appeal to their common sense, to their deep and instinctive conviction of what was right. If they condemned those who practised these things; if, imperfect and obscure as their sense of justice was; if, unholy as they were, they yet condemned those who were guilty of these offences, would not a holy and just God be far more likely to pronounce judgment? And could they escape who had themselves delivered a similar sentence? God is of "purer eyes than to behold evil, and cannot look upon iniquity," Hab 1:13. And if men condemned their fellowmen, how much more would a pure and holy God condemn iniquity.