"Blow the cornet in Gibeah, And the trumpet in Ramah! Sound a battle cry at Beth Aven, behind you, Benjamin!
"The cornet ... the trumpet ..." This symbol for general alarm had originated during the wilderness wanderings of the chosen people during which time the sounding of the shopar, or ram's horn, signaled the break of camp, or any other important public event.  In time, it became universally accepted among the Hebrews as the idiom for any type of general, emergency alert.  Jesus Christ even applied it to the general assembly of all mankind for the Great Assize at the last day, an event which he said would be ushered in by "the sound of the trumpet."   (Matthew 24:31).  Paul used the same metaphor  (1 Corinthians 15:52).