'Labour' in the Bible

Thus said Jehovah, 'The labour of Egypt, And the merchandise of Cush, And of the Sebaim -- men of measure, Unto thee pass over, and thine they are, After thee they go, in fetters they pass over, And unto thee they bow themselves, Unto thee they pray: Only in thee is God, And there is none else, no other God.

Of the labour of his soul he seeth -- he is satisfied, Through his knowledge give righteousness Doth the righteous one, My servant, to many, And their iniquities he doth bear.

Why do ye weigh money for that which is not bread? And your labour for that which is not for satiety? Hearken diligently unto me, and eat good, And your soul doth delight itself in fatness.

They labour not for a vain thing, Nor do they bring forth for trouble, For the seed of the blessed of Jehovah are they, And their offspring with them.