It is a wonderful fact that God has given us all that we need in order to understand in a relatively compact volume. The Bible is a practical size so that it can be translated into other languages relatively easily, and so that each nation can have all that God has ever intended the human race to have of his revelation. The authors of Scripture, including Solomon, worked hard to reduce what they had to say to as concise a form as possible, and there are no wasted words in Scripture. The Bible is suitable for the greatest of scholars and for the humblest of saints. It is small enough for much of its contents to be committed to memory and those who have nothing else have more than sufficient to teach them where the world came from and who made it, the explanation for the current state of man, what God has done to save us from sin, how to find the Lord, how to worship and serve him, how to form churches and many other things besides.
Not that Solomon is against study, but he would just have us not waste our time in following the teachings of those who speak only from their own minds. It is a wonderful thing that the Christian can be delivered from that itching suspicion that there is always something else that we have not seen which we need to familiarise ourselves with; to such people the truth is always just around the corner. On the contrary, truth is in our hands when we hold God’s word and this is all that we need.