'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 profit, if so be thou mayest prevail.

Thus shall they be unto thee with whom thou hast laboured, even thy merchants, from thy youth: they shall wander every one to his quarter; none shall save thee.

Then I said, I have laboured in vain, I have spent my strength for nought, and in vain: yet surely my judgment is with the LORD, and my work with my God.

In the greatness of thy way thou hast laboured, Thou hast not said, 'It is desperate.' The life of thy hand thou hast found, Therefore thou hast not been sick.

The LORD hath sworn by his right hand, and by the arm of his strength, Surely I will no more give thy corn to be meat for thine enemies; and the sons of the stranger shall not drink thy wine, for the which thou hast laboured: