We often judge others by their actions, while judging ourselves by our intentions.  Paul declares that everyone will be judged, not by what they have heard, or even what they have believed.  We will all be judged by what we do.  Not that our actions save us…but our actions testify to whether we are saved.  We will all be held to account for what we do with what we know. (Note the pronoun “you” he is talking to Jews).