'Labor' in the Bible

Then the Assyrian will fall by a sword not of man,And a sword not of man will devour him.And he will flee from the sword [of God],And his young men will become forced labor.

For this is what the Lord says,“The products of Egypt and the merchandise of Cush (ancient Ethiopia)And the Sabeans, men of stature,Will come over to you and they will be yours;They will walk behind you, in chains [of subjection to you] they will come over,And they will bow down before you;They will make supplication to you, [humbly and earnestly] saying,‘Most certainly God is with you, and there is no other,No other God [besides Him].’”

‘Why have we fasted,’ they say, ‘and You do not see it?Why have we humbled ourselves and You do not notice?’Hear this [O Israel], on the day of your fast [when you should be grieving for your sins] you find something you desire [to do],And you force your hired servants to work [instead of stopping all work, as the law teaches].

“They will not labor in vain,Or bear children for disaster;For they are the descendants of those blessed by the Lord,And their offspring with them.

“Who has heard of such a thing? Who has seen such things?Can a land be born in one day?Or can a nation be brought forth in a moment?As soon as Zion was in labor, she also brought forth her sons.