In Matthew 12:34, we're told that "out of the abundance of the heart the mouth speaks." Our hearts reveal a lot about us, and about how we think. In this week's episode, I will delve into a few scriptures about the heart and attempt to answer a few probing questions: How do we know if we have positive or negative things in our hearts? How can our hearts be changed? How can what's in our hearts affect our lives and interactions with others?