Words Both Bless and Curse

"The pen is mightier than the sword." is a true saying. Words have immense power, especially to those who understand the power of words. 

Wise people are careful with their words, and foolish people are reckless with theirs. God said the power of life and death is in the tongue. When one speaks kindly to someone it is speaking life to them.  When one speaks harshly one speaks death. 

By the blessing of the upright the city is exalted: but it is overthrown by the mouth of the wicked.  Proverbs 11:11