'Useless' in the Bible

They profess to know God; but in their actions they disown Him, and are detestable and disobedient men, and for any good work are utterly useless.

But avoid foolish controversies, arguments about genealogies, quarrels, and fights about the Law. These things are useless and worthless.

And let our people too learn to set a good example in following honest occupations for the supply of their necessities, so that they may not live useless lives.