Luke 17:10

10 So you also, when you have done everything you were told to do, should say, ‘We are unworthy servants; we have only done our duty.’ ”

Read Luke 17:10 Using Other Translations

So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do.
So you also, when you have done all that you were commanded, say, 'We are unworthy servants; we have only done what was our duty.'"
In the same way, when you obey me you should say, ‘We are unworthy servants who have simply done our duty.’”