Ecclesiastes 1:13-14 And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven : this grievous labour hath God given to the sons of man to be exercised with it.

Webster_Strongs⁽ⁱ⁾

13 H5414 [H8804] And I gave H3820 my heart H1875 [H8800] to seek H8446 [H8800] and search out H2451 by wisdom H6213 [H8738] concerning all things that are done H8064 under heaven H7451 : this grievous H6045 labour H430 hath God H5414 [H8804] given H1121 to the sons H120 of man H6031 [H8800] to be exercised with it.

14 H7200 [H8804] I have seen H4639 all the works H6213 [H8738] that are done H8121 under the sun H1892 ; and, behold, all is vanity H7469 and vexation H7307 of spirit.