Luka 17:10

Vivyo hivyo nanyi mkiisha kufanya mliyoagizwa, semeni, ‘Sisi tu watumishi tusiostahili; tumefanya tu yale tuliyopaswa kufanya.’ ”

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.