Proverbs 8:6 (NKJV) — 6 Listen, for I will speak of excellent things, And from the opening of my lips will come right things;
Excellent and right things. Every word of wisdom is excellent and right. It is necessary only to hear, to listen to her.
Notice the contrast:
Ephesians 4:29 (NKJV) — 29 Let no corrupt word proceed out of your mouth, but what is good for necessary edification, that it may impart grace to the hearers.