Ecclesiastes 7:27

Behold, this have I found, saith the preacher, counting one by one, to find out the account:

Cross-reference

Ecclesiastes 7:25 describes the same quest to 'seek wisdom and the scheme of things', directly preceding the Preacher's summary in 7:27.

Ecclesiastes 12:8-10 describes the Preacher's diligent search for truth, confirming the methodology stated in 7:27.

Ecclesiastes 1:2 states the book's central theme—'Vanity of vanities!'—which frames the Preacher's search in 7:27.