Luke 17:7-10

But who is there of you, having a servant plowing or keeping sheep, that will say unto him, when he is come in from the field, Come straightway and sit down to meat; and will not rather say unto him, Make ready wherewith I may sup, and gird thyself, and serve me, till I have eaten and drunken; and afterward thou shalt eat and drink? Doth he thank the servant because he did the things that were commanded? Even so ye also, when ye shall have done all the things that are commanded you, say, We are unprofitable servants; we have done that which it was our duty to do.