Rashi on the Prophets and Writings

Maaseiah, the king’s son [I.e., the son of] Ahaz. Zichri, a mighty man of Ephraim slew [him].
and Azrikam - Heb. וְאֶת וְאֶת, similar to (Gen. 36:24): “and Aiah and Anah (וְאַיָּה וְעַנָה),” and similarly, (Ps. 76:7): “and chariot and horse (וָרֶכֶב וָסוּס) were stunned.”

And the men who were mentioned by name arose above (verse 12). Who were they? Those men who were of the heads of the sons of Ephraim: Azariah the son of Jehohanan and his colleagues.
and all their nakedness - Heb. מַעֲרֻמֵּיהֶם, an expression of (Ezek. 15: “naked (עֵרם) and bare.”

And Philistines raided the cities of the lowlands and the southland which was opposite them, as it is written about the Philistines, (Zeph. 2:5): “the inhabitants of the seacoast.”

for he exposed Judah - Heb. הִפְרִיעַ, similar to (Exod. 32:25): “for Aaron had exposed them (פְּרָעֹה) (Jud. 5:2): “When breaches are made (בִּפְרֹעַ פְּרָעוֹת).”

came upon him for he had sent after him to aid him, as is written in II Kings (16:7): “And Ahaz sent messengers to Tiglath-Pilneser.”
and oppressed him from that which he shared with him [from] the House of the Lord and the palace of the king, etc.”

but he was of no help to him Even though we find in II Kings (ibid. verse 9): “and the king of Assyria went up to Damascus and seized it and exiled it[s inhabitants] to Kir, and slew Rezin,” he was not much of an aid to him to strengthen him and to restore the cities that the Philistines had taken from him.

and he closed the doors of the House of the Lord so that the priests would not go to perform their service in the Tent of Meeting, but come to the altars that he erected on every corner in Jerusalem, and Hezekiah “opened the doors of the House of the Lord,” (below 29:3) because his father had closed the doors of the House of the Lord.