Job Chapter 33, Verse 3

3: My words shall be of the uprightness of my heart: and my lips shall utter knowledge clearly.- edit KJV text
3: My words are from my upright heart, and my lips shall speak a pure sentence.— edit Douay text
3: My heart [shall be found] pure by [my] words; and the understanding of my lips shall meditate purity.— edit LXX text