5. Then Rezin king of Syria and Pekah son of Remaliah king of Israel came up to Jerusalem—Notwithstanding their great efforts and military preparations, they failed to take it and, being disappointed, raised the siege and returned home (compare Isa 7:1).

     17. again the Edomites had come and smitten Judah—This invasion must have been after Rezin (at the beginning of the recent Syro-Israelitish war), had released that people from the yoke of Judah (2Ch 15:11; compare 2Ki 16:6).