Thematic Bible: Supererogation

Therefore, son of man, say to the sons of your people: The righteousness of the righteous shall not deliver him in the day of his transgression. As for the wickedness of the wicked, he shall not fall by it in the day he turns from his wickedness. Nor shall the righteous be able to live for his righteousness in the day that he sins. When I shall say to the righteous that he shall surely live; if he trusts in his own righteousness and commits iniquity, all his righteousnesses shall not be remembered; but for his iniquity that he has committed, he shall die for it.

So likewise you, when you shall have done all the things commanded you, say, We are unprofitable servants, for we have done what we ought to do. Verse ConceptsCommands, in NTServants, GoodDuty