How can it below that in the first month he was in his first year? We increment the year of the king each Nisan!
Ya'aros Devash (2:18), Malbim: Chizkiyah was Me'aber the year on Adar 30, which is proper to be Rosh Chodesh Nisan; this is invalid. According to his thinking, this was Adar Sheni, and it was still his first year 1 .
What was the difficulty? Perhaps he became king in Nisan! Perhaps they assume that the only reason to be Me'aber so late is if he became king shortly before this. (In Bayis Sheni, we were Me'aber due to Bnei Bavel who started coming to Yerushalayim, but will not arrive in time for Pesach ? but then, Shomrei Mitzvos were not living in Bavel!) In any case, why is the month according to Emes, and the year according to what he thought? (PF)
Why did he strengthen the doors of Beis Hashem?
Malbim: They were destroyed when people turned away from the Mikdash.
