When we grasp the truth contained in the psalm that is our text today, we find liberation. The truth in this psalm strikes fear in the devil. When we understand what God has given us, it changes our entire life. In these short two verses of scripture, we see two ways that God shows his most remarkable work. First the vastness and grandness of all the heavens, and then the frailty and weakness of humanity. When Jesus quotes this psalm in Matthew 21, he ties these two things together as a way to perfect our lives and restore what has been lost. The thing that does this is what comes out of our mouths. When we declare it, speak it, and praise Him for it, we accept the healing and solution that God has for our life. When life is out of sorts and doesn't fit together, God knows how to work it out. Our praise has the power to silence our enemy and the enemy in our minds. When we praise and worship Him, we connect ourselves to a supernatural force that will restore and uplift us. God said He would use the praise of the weak to defeat the tormentor. The parise and worship that comes from our mouth muzzle the devil. That is why the devil works so hard to discourage us from praising God.