Rashi on the Former Prophets

At his place. The place where the king stands in the Beis Hamikdosh.

The kohanim of the second rank. The assistants of the priesthood,who was anointed for war was also included in this group.—Metzudas Dovid who are second in rank in the event that he was incapacitated to perform the service in the Beis Hamikdosh.—Radak to the Kohanim Gedolim.
And the gatekeepers. The supervisors in charge over all the necessities of the Beis [Hamikdosh], and the keys of the Temple's courtyard were in their charge.
In the plains of Kidron. In the plains of Kidron.
And he carried their ashes to Beis Eil. To an unclean place, where he defiled the altar that Yorovom had made, and he burned upon it the priests of the high places.

And who had burned incense on the high places. And those who burned incense on the high places in the cities of Yehudah.

The houses devoted to pagan worship. The houses of lewdness. and lived in seclusion.—Metzudas Dovid
Would weave coverings Curtains..—Metzudas Dovid

Were not permitted to ascend. The priests who burned incense on the high places to idols, were not permitted to ascend anymore to serve on the Altar of Adonoy.
They would eat matzohs. I.e., but in this thing they would not be disqualified from their priesthood, that they are allowed to eat hallowed things. They are like blemished [kohanim] and they share and eat [of the sacrifice], but they may not offer [sacrifices].
They would eat matzohs. Meal-offerings, and similarly, all hallowed things.

The Tophes. This was the Molech, it is named [תפת] because priests would bang on drums [=תופים] so that the father should not hear the groans of the child when he was burned by the pagan image, Molech, they called it Tophes.

The horses. Those [people] who prostrated themselves to the sun, had horses ready in the morning to go out toward the sun.
Nesan Melech. That was its name.
In the outskirts. I do not know what they are.

He quickly removed them from there. And he eliminated them from there.

Of Har Hamashchis. [I.e.,] the Mount of Olives, which is known as the Mount of Oil. But because its name is mentioned in reference to idolatry, [Scripture] changed its name to a derogatory expression.

”What is this marker?” He saw a grave, one side of which was overgrown with thorns and thistles, and whose other side was graced with myrtles and spices. He wondered about it and said, “What is this?” And they replied.
”It is the grave of the man of God.” And the false prophet, who commanded his sons that they bury him next to him.

In the cities of Shomron. For Yeshayohu was king over all Yisroel, of those who returned from the ten tribes through Yirmiyohu.

Such a Pesach sacrifice had not been offered. So many people had not assembled at any Pesach sacrifice as had assembled at this one.
Since the time of the Judges. ”Since the time of Shmuel,” In Divrei Hayomim, it is written, because Shmuel, too, led Yisroel to improve their ways, and he assembled them to Mitzpoh. Alternatively, such a Pesach had not been offered to God in Yerusholayim, [i.e.,] (but) when the kings of Yisroel and the kings of Yehudah reigned, all Yisroel did not perform a Pesach sacrifice in Yerusholayim, because the kingdom had been divided in two since Yorovom, and they would go to the calf in Beis Eil and in Dan until now, that the ten tribes were exiled, and Yirmiyohu brought them back, and Yoshiyahu reigned over them, and they all came to Yerusholayim.

The teraphim. Images as being made in the likeness of a human figure. that speak through sorcery, and the one who make them must determine a certain time in the year, and a certain year that is appropriate for this.

Anointed. He did not require anointment, nonetheless [he was anointed] because Yehoyakim his brother was two years older than he, as is explained in this section.

Each one according to his assessment. According to his wealth.