Proverbs 5:2

so you may carefully practice discretion and your lips preserve knowledge.

You are the most handsome of Adam's descendants; grace has anointed your lips; therefore God has blessed you forever.

I will declare your righteousness and your salvation every day, though I do not fully understand what the outcome will be.

I have spoken with my lips about all your decrees that you have announced.

What the righteous person says nourishes many, but fools die because they lack discerning hearts.

The wise speak, presenting knowledge appropriately, but fools spout foolishness.

What the wise have to say disseminates knowledge, but it's not in the heart of fools to do so.

A wise person's thoughts control his words, and his speech promotes instruction.

There is an abundance of gold and precious stones, but lips of knowledge are a rare jewel.

Your lips drip honey, my bride; milk and honey are under your tongue. The scent of your garments is like the fragrance of Lebanon.

True teachings were in his mouth, and falsehood was not found on his lips. He walked with me peacefully and righteously, and he turned many from sin.

Treasury of Scripture Knowledge

That thou mayest regard discretion, and that thy lips may keep knowledge.