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.

We are to speak words that produce good in our lives, which means that we may have to be silent when we cannot speak life producing words. The devil will try and prod us into sabotaging the blessings that God has in store for our lives with what we say. Faith and doubt work in opposite directions and speak in different ways. Be a light of faith.