The good man out of the good treasure of his heart brings forth what is good; and the evil man out of the evil treasure brings forth what is evil; for his mouth speaks from that which fills his heart. (Luke 6:45)
Good and evil treasures lie in the hearts of people according to this verse. And what they speak shows what their hearts are filled with. Our words reflect how much of fruit of the Holy Spirit we are bearing. As believers in Jesus Christ, God longs to see us bearing much fruit and he also expects us to validate that with the words we speak. Let us bring forth good from our mouths from the good treasures filled in our hearts, is a prayer, we all should pray. Bringing forth such good would bring much glory to God.