Proverbs 12:5-6

The thoughts and purposes of the (consistently) righteous are just (honest, reliable), but the counsel and schemes of the wicked are deceitful. The (malevolent) words of the wicked lie in wait for (innocent) blood (to slander), but the mouth of the upright will rescue and protect them. 

We are protected and remain righteous when we are honest and not deceitful. The wicked are not that way. They cannot be relied upon to speak the truth and will bring about the downfall of those who are innocent with lies if they trust them. Our words matter! When we say the words of God and remain under His protection, we will not be overcome by the wicked.