Got this from Randy's facebook page. Here is what he writes
"The power of the words we speak is far greater than we realize. "Life
and death is in the power of the tongue" (Prov. 18:21). Years ago I
put together a number of Scriptures on the power of our words. I
encourage you to read them and meditate on them, and examine your
heart and habits. These biblical principles apply every bit as much to
our written words as our spoken ones."
Here is the link
http://www.epm.org/resources/2010/Mar/2/biblical-principles-godly-verbal-communication/
Mike