The U.S. Army’s expression “hoo-ah” is a guttural response barked when troops voice approval. Its original meaning is lost to history, but some say it is derived from an old acronym HUA—Heard, Understood, and Acknowledged. I first heard the word in basic training.

            Many years later it found its way into my vocabulary again when I began to meet on Wednesday mornings with a group of men to study the Scriptures. One morning one of the men—a former member of the 82nd Airborne Division—was reading one of the psalms and came to the notation selah that occurs throughout the psalms. Instead…