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The Edomites took advantage of the setbacks of Ahaz and were perhaps in league with Rezin (see 2 Kings 16:6 note). The pitilessness of …

For again. — And moreover.
Smitten Judah. — Smitten in Judah, i.e., inflicted a defeat u…

The Edomites had been under subjection to Judah; but now that God had left her, Judah could not hold her position.

For again the Edomites had come
As in the days of Jehoshaphat, (2 Chronicles 20:10) ,

Israel gained this victory because God was wrathful with Judah and made Israel His rod of indignation. He reminds them of their own sins. It is unb…
Albert Barnes
AlbertBarnes