Blow ye the cornet in Gibeah, and the trumpet in Ramah: cry aloud at Bethaven, after thee, O Benjamin. Blow ye the cornet in Gibeah - Gibeah and Ramah were cities of Judah, in the tribe of Benjamin.
After thee, O Benjamin - An abrupt call of warning. "Benjamin, fly for thy life! The enemy is just behind thee!" This is a prediction of the invasion of the Assyrians, and the captivity of the ten tribes.