What does the Bible say about harsh words?

What does the Bible say about harsh words? Bible Gateway Proverbs 15 :: NIV. A gentle answer turns away wrath, but a harsh word stirs up anger. The tongue of the wise commends knowledge, but the mouth of the fool gushes folly.

Bible Gateway Proverbs 15 :: NIV. A gentle answer turns away wrath, but a harsh word stirs up anger. The tongue of the wise commends knowledge, but the mouth of the fool gushes folly.