The Evils of Angry, Hasty Words
When you speak angry words to your children, you are helping the cause of the enemy of all righteousness. Let every child have a fair chance from babyhood up. The work of teaching should begin in childhood, not accompanied by harshness and fretting, but in kindness and patience; and this instruction should be continued through all their years to manhood and womanhood. Let every family seek the Lord in earnest prayer for help to do the work of God. Let them overcome the habits of hasty speech and the desire to blame others. Let them study to be kind and courteous in the home, to form habits of thoughtfulness and care. What harm is wrought in the family circle by the utterance of impatient words, for the impatient utterance of one leads another to retort in the same spirit and manner. Then come words of retaliation, words of self-justification, and it is by such words that a heavy, galling yoke is manufactured for your neck; for all these bitter words will come back in a baleful harvest to your soul. Hard words beat upon the heart through the ear, awakening to life the worst passions of the soul and tempting men and women to break God's commandments .... Words are as seeds which are planted.
Adventist Home, Chapter 71, Pg 438-439
Proverbs 16:24 KJV
24 Pleasant words are as an honeycomb, sweet to the soul, and health to the bones.
Proverbs 15:1 KJV
15 A soft answer turneth away wrath: but grievous words stir up anger.
Proverbs 11:17 KJV
17 The merciful man doeth good to his own soul: but he that is cruel troubleth his own flesh.