'Labored' in the Bible

"Stand now with your enchantments, and with the multitude of your sorceries, in which you have labored from your youth; if so be you shall be able to profit, if so be you may prevail.

Thus shall the things be to you in which you have labored: those who have trafficked with you from your youth shall wander everyone to his quarter; there shall be none to save you.

But I said, "I have labored in vain, I have spent my strength for nothing and vanity; yet surely the justice [due] to me is with Yahweh, and my reward with my God."

Yahweh has sworn by his right hand, and by the arm of his strength, "Surely I will no more give your grain to be food for your enemies; and foreigners shall not drink your new wine, for which you have labored: