'Labored' in the Bible

Then I looked on all the works that my hands had wrought, and on the labor that I had labored to do; and, behold, all was vanity and a striving after wind, and there was no profit under the sun.

And I hated all my labor wherein I labored under the sun, seeing that I must leave it unto the man that shall be after me.

And who knoweth whether he will be a wise man or a fool? yet will he have rule over all my labor wherein I have labored, and wherein I have showed myself wise under the sun. This also is vanity.

Therefore I turned about to cause my heart to despair concerning all the labor wherein I had labored under the sun.

For there is a man whose labor is with wisdom, and with knowledge, and with skilfulness; yet to a man that hath not labored therein shall he leave it for his portion. This also is vanity and a great evil.