'Labored' in the Bible

Then I examined all of my accomplishments that I had brought about by my own efforts, including the work that I had labored so hard to complete and it was all pointless, like chasing after the wind, and there was nothing to be gained on earth.

"But stand up now with your spells and your many incantations, at which you have labored from your childhood until today,

"I said: "I've labored for nothing. I've exhausted my strength on futility and on emptiness.' Yet surely my recompense is with the LORD, and my reward is with my God.