Luke 17:5-10 KJV

6 And the Lord said , If ye had faith as a grain of mustard seed, ye might say unto this sycamine tree, Be thou plucked up by the root , and be thou planted in the sea; and it should obey you.
7 But which of you, having a servant plowing or feeding cattle , will say unto him by and by, when he is come from the field, Go and sit down to meat ?
8 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 ?
9 Doth he thank that servant because he did the things that were commanded him? I trow not.
10 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 .