²¹ For there is a man whose labor is with wisdom, with knowledge, and with skillfulness; yet he shall leave it for his portion to a man who has not labored for it. This also is vanity and a great evil. ²² For what does a man have of all his labor and of the striving of his heart, in which he labors under the sun? ²³ For all his days are sorrows, and his travail is grief; yes, even in the night his heart takes no rest. This also is vanity.