'Toil' in the Bible

They won't toil in vain nor bear children doomed to misfortune, for they will be offspring blessed by the LORD, they and their descendants with them.

This is what the LORD of the Heavenly Armies says: "The broad wall of Babylon will be completely leveled, and its high gate set on fire. and so the nations toil for nothing, and the nations weary themselves only for fire."