'Laboring' in the Bible

For they all were trying to make us afraid by saying, "Their hands will become tired from laboring, so the work won't be completed." "Therefore, LORD, strengthen my hands!"

The appetite of the laboring man laboreth for him; For his mouth urgeth him thereto .

There was a certain man without a dependent, having neither a son nor a brother, yet there was no end to all his labor. Indeed, his eyes were not satisfied with riches and he never asked, “And for whom am I laboring and depriving myself of pleasure?” This too is vanity and it is a grievous task.

The sleep of a laboring man is sweet, whether he eat little or much; but the fulness of the rich will not suffer him to sleep.