An essay by Walter Brueggemann entitled “The Psalm as Limited Expressions” tells of limited expressions are words and phrases that push one to the extremity of human experience. How Long O Lord is a limit expression phrase. It’s a phase that one utters when one is pushed to the limit of human expression. He argues that such utterances resist the thinness and the flatness and refuses a safe managed life. Such utterances challenges the pre-packaged life where we live off the baby food of cliché and the familiar, and yet have to