Where it appears

• Eccl 1:13I applied my heart to seek and to search out by wisdom concerning all that is done under the sky. It is a heavy burden that God has given to the sons of men to be afflicted with.
• Eccl 2:23For all his days are sorrows, and his travail is grief; yes, even in the night his heart takes no rest. This also is vanity.
• Eccl 2:26For to the man who pleases him, God gives wisdom, knowledge, and joy; but to the sinner he gives travail, to gather and to heap up, that he may give to him who pleases God. This also is vanity and a chasing after wind.
• Eccl 3:10I have seen the burden which God has given to the sons of men to be afflicted with.
• Eccl 4:8There is one who is alone, and he has neither son nor brother. There is no end to all of his labor, neither are his eyes satisfied with wealth. “For whom then, do I labor, and deprive my soul of enjoyment?” This also is vanity. Yes, it is a miserable business.
• Eccl 5:3For as a dream comes with a multitude of cares, so a fool’s speech with a multitude of words.
• Eccl 5:14Those riches perish by misfortune, and if he has fathered a son, there is nothing in his hand.
• Eccl 8:16When I applied my heart to know wisdom, and to see the business that is done on the earth (for also there is that neither day nor night sees sleep with his eyes),