In Psalm 37, King David instructs me to not fret when evil people seem to succeed for they will vanish like the wind. Instead of getting all worked up, he tells me to trust in the Lord and do good. But I can't do this all by myself. I need to know the One in whom I place my confident assurance. I need to know what he is doing about evildoers. David assures me, God is actively involved and he is for me.