'Just Reward' in the Bible

“I have not spoken in secret,In a corner of a land of darkness;I did not say to the descendants of Jacob,‘Seek Me in vain [with no benefit for yourselves].’I, the Lord, speak righteousness [the truth—trustworthy, a straightforward correlation between deeds and words],Declaring things that are upright.

Flee out of the middle of Babylon, and each man deliver his soul. Be not cut off in her iniquity, for this is the time of Jehovah's vengeance; He will give to her a just reward.