Proverbs 12:14

A man will be satisfied with good by the fruit of his mouth, and the recompense of a man’s hands will be rendered to him.  

What we believe we will speak.  If we want to have blessings in this life, we must believe and speak these blessings. The word recompense means to compensate for damages done.  We can speak damaging words for ourselves and suffer for it.  Our mouth has the power to change our world and cause us to prosper or be defeated.  That brings a new meaning to think before we speak.