Proverbs 15:1-2, 4
Proverbs 15:1-2 KJV
A soft answer turneth away wrath: But grievous words stir up anger. The tongue of the wise useth knowledge aright: But the mouth of fools poureth out foolishness.
Proverbs 15:4 KJV
A wholesome tongue is a tree of life: But perverseness therein is a breach in the spirit.