'Work' in the Bible

and he was not able there any mighty work to do, except on a few infirm people having put hands he did heal them;

And Jesus said, 'Forbid him not, for there is no one who shall do a mighty work in my name, and shall be able readily to speak evil of me:

as a man who is gone abroad, having left his house, and given to his servants the authority, and to each one his work, did command also the porter that he may watch;

And Jesus said, 'Let her alone; why are ye giving her trouble? a good work she wrought on me;