Proverbs 15:4

v. 4. A wholesome tongue, literally, "gentleness of tongue," is a tree of life, that is, a person who, in true humility, uses gentle, pacifying, soothing speech will do his share toward a better appreciation and use of life, will cause people with whom he comes into contact to enjoy it more properly; but perverseness therein, that is, transgression with the tongue, its abuse for the purpose of stirring up contention, is a breach in the spirit, it wounds the spirit of men, it causes heartache and grief.