What does 2 Kings 23:27 mean?

Moreover Josiah removed those who had familiar spirits, the wizards, and the teraphim, and the idols, and all the abominations that were seen in the land of Judah and in Jerusalem, that he might confirm the words of the law which were written in the book that Hilkiah the priest found in Yahweh’s house.

There was no king like him before him, who turned to Yahweh with all his heart, and with all his soul, and with all his might, according to all the law of Moses; and there was none like him who arose after him.

Notwithstanding, Yahweh didn’t turn from the fierceness of his great wrath, with which his anger burned against Judah, because of all the provocation with which Manasseh had provoked him.

Now the rest of the acts of Josiah, and all that he did, aren’t they written in the book of the chronicles of the kings of Judah?

In his days Pharaoh Necoh king of Egypt went up against the king of Assyria to the river Euphrates; and king Josiah went against him; and Pharaoh Necoh killed him at Megiddo, when he had seen him.

His servants carried him in a chariot dead from Megiddo, and brought him to Jerusalem, and buried him in his own tomb. The people of the land took Jehoahaz the son of Josiah, and anointed him, and made him king in his father’s place.