'Laboured' in the Bible

Stand now with thine enchantments and with the multitude of thy sorceries, wherein thou hast laboured from thy youth; if so be thou shalt be able to turn them to profit, if so be thou mayest cause terror.

Thus shall they be unto thee with whom thou hast laboured, they that trafficked with thee from thy youth: they shall wander every one to his own quarter; there is none to save thee.

And I said, I have laboured in vain, I have spent my strength for nought and in vain; nevertheless my judgment is with Jehovah, and my work with my God.

Jehovah hath sworn by his right hand and by the arm of his strength, I will indeed no more give thy corn to be food for thine enemies; and the sons of the alien shall not drink thy new wine, for which thou hast laboured;