* they saw one another.
   That is, "they fought against each other."  To face an enemy,
   or to face one another, is still a common expression.  The
   reason of this war was evidently the injury the army of Joash
   had done to the unoffending inhabitants of Judah.  The ravages
   committed by them were totally unprovoked, base, and cowardly:
   they fell upon women, old men, and children, and butchered
   them in cold blood, when all the effective men were gone with
   their king against the Edomites.  The quarrel of Amaziah were
   certainly just, yet he was put to the rout:  he fell, and
   Judah with him, as Joash had said; and the reason was, because
   "it came of God, that he might deliver them into the hands of
   their enemies, because they sought after the gods of Edom."
   This was the reason why the Israelites triumphed.

  17 
 * Beth-shemesh.
  Jos 21:16  1Sa 6:9,19,20