Adam Clarke on Jeremiah 6:1

O ye children of Benjamin, gather yourselves to flee - As the invading armies are fast approaching, the prophet calls on the inhabitants of Jerusalem to sound an alarm, and collect all the people to arm themselves and go against the invaders. They are called the children of Benjamin, because Jerusalem was in the tribe of Benjamin.

Tekoa - Was a city about twelve miles to the south of Jerusalem.

Beth-haccerem - Was the name of a small village situated on an eminence between Jerusalem and Tekoa. On this they were ordered to set up a beacon, or kindle a large fire, which might be seen at a distance, and give the people to understand that an enemy was entering the land.

Out of the north - From Babylon. The Scythians. - Dahler.