The reason we need to quiet ourselves is because we start making bad noise at times. That is why God says we need to quiet ourselves. He is not surprised. He didn't come to call the righteous to repentance but sinners. And all have sinned.
Scripture teaches that a wise person can be corrected by words.
The Scripture makes wise the simple. Also we learn from reading that a wicked fool receiving one hundred strikes to the back continues to curse remaining without correction. Confess and forsake. Jesus came to save us from our sin. Our God wants us to turn from our ways to His.