'Work' in the Bible

And he could not do any work of power there, save that laying his hands on a few infirm persons he healed them.

it is as a man gone out of the country, having left his house and given to his bondmen the authority, and to each one his work, and commanded the doorkeeper that he should watch.

But Jesus said, Let her alone; why do ye trouble her? she has wrought a good work as to me;