Taught — As God gave him this wisdom, that he might be a teacher of others. So he used it to that end. Gave heed — He did not utter whatever came into his mind, but seriously pondered both his matter and words.
Related Commentaries of Ecclesiastes 12:9
Ecclesiastes 12:9
9 And moreover,b because the preacher was wise, he still taught the people knowledge; yea, he gave good heed, and sought out, and set in order many proverbs.