Ecclesiastes 1:2-3; Ecclesiastes 1:14; Ecclesiastes 1:17

Ecclesiastes 1:2-3

2 Vanity of vanities, saith the Preacher, vanity of vanities; all is vanity.

3 What profit does a man have of all his labour which he takes under the sun?

Ecclesiastes 1:14

14 I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.

Ecclesiastes 1:17

17 And I gave my heart to know wisdom and knowledge and to know folly and those who are mad; I learned in the end that this also is vexation of spirit.