KJV:
And cast ye the unprofitable servant into outer darkness: there shall be weeping and gnashing of teeth.
NASB:
"Throw out the worthless slave into the outer darkness; in that place there will be weeping and gnashing of teeth.
KJV:
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.
NASB:
"So you too, when you do all the things which are commanded you, say, 'We are unworthy slaves; we have done only that which we ought to have done.'"