'Labor' in the Bible

But the shameful thing has devoured the labor of our fathers from our youth, their flocks and their herds, their sons and their daughters.

Why came I forth out of the womb to see labor and sorrow, that my days should be consumed with shame?

Thus says Yahweh of Armies: The broad walls of Babylon shall be utterly overthrown, and her high gates shall be burned with fire; and the peoples shall labor for vanity, and the nations for the fire; and they shall be weary.