1)
Who was the savior?
1.
Rashi: It was Yo'ash ben Yehoachaz; it says "you will strike Aram three times" (verse 19). Radak - all the days of Yehoachaz, Melech Aram pressured them. Malbim - Yo'ash reigned at the end of Yehoachaz' life (refer to 13:10:1:1), and saved them