Thematic Bible: Supererogation

"And now, Son of Man, say this to your people: "The righteousness of the righteous won't save them when they keep on committing crimes against me, the wickedness of the wicked won't keep them from remaining away when they're turning from their wickedness, and no righteous person will keep on living by their righteousness when they sin.' "If I tell the righteous person that he will certainly live, if he trusts in his own righteousness and commits evil, none of his righteousness will be remembered, and he will die because of the wrong that he commits.

That's the way it is with you. When you have done everything you were ordered to do, say, "We are worthless servants. We have done only what we ought to have done.'" Verse ConceptsCommands, in NTServants, GoodDuty