What's Inside?

Photo attribution here

The human spirit (a person's words) 
is the lamp of the Lord
 that sheds light on 
one’s inmost being.
Proverbs 20:27


The words in parenthesis were in a footnote and I think it interesting that "a person's words" denotes "the human spirit."  
I understand it this way:
A person's words cause the lamp of the Lord to shine on his inmost being.

  Another scripture states something similar.

But the things that 
come out of a person’s mouth 
come from the heart,
 and these defile them.  
Matthew 15:18

Sometimes my mouth gets in the way of common sense and judgment.  I have a lot of work to do on my heart condition.