How could you tell if someone has good treasures stored in his heart?

Sinful actions and angry words reveals the evil treasures stored in our hearts. They are fueled by lust, greed, hatred, covetousness, corruptions, malice, envy, all of which dishonors God. Let us not honor God with our lips while our hearts condemns us. No foul language, corrupt communication, words or actions that will hurt others is to come from within us, but only what is good for building up someone in need, so that it gives grace to those who hear. Lord, help us now, to also rid ourselves of all such things as these: anger, rage, malice, slander, hatred, greed, lust and filthy language from your lips, so that we may pursue what makes for peace and for building up one another. Praise the Lord!