just reward

noun2

1. •
   A benefit received (tangible or figurative) as a result of morally, or acceptably correct actions.

   • On that day all questions will be answered, all mysteries solved. And Alfred will be there, right along you and me, to receive his just rewards, whether for eternal life or eternal death. — 2012
2. •
   A punishment received (tangible or figurative) as a result of morally incorrect, or unacceptable actions.