10 The Teacher searched to find just the right words, and what he wrote was upright and true.

Read Ecclesiastes 12:10 Using Other Translations

The preacher sought to find out acceptable words: and that which was written was upright, even words of truth.
The Preacher sought to find words of delight, and uprightly he wrote words of truth.
The Teacher sought to find just the right words to express truths clearly.