2 Kings 21:25
Now the rest of the acts of Amon which he did, are they not written in the book of the chronicles of the kings of Judah? Now the rest of the acts of Amon which he did, are they not written in the book of the chronicles of the kings of Judah?
The verse belongs to the closing history of the kings of Judah after the ten northern tribes had been swept away, within the account of the kings that runs from Solomon's accession to the Babylonian captivity. It is part of the closing history of Kings that records the wicked and weak reigns of the kings of Judah, leading from the end of the northern kingdom to Judah's own Babylonian captivity.
Within that history the verse belongs to the account of Amon's reign over Judah, Amon being the father of Josiah. Amon was the wicked son of the wicked Manasseh, and he helped continue the idolatry established under Manasseh. The surrounding record spans eight chapters and covers seven kings, including Hezekiah, Manasseh, Amon, and Josiah.
The surrounding account records that Amon was murdered in the palace and that Josiah became king at eight years old. The verse stands just before the bright chapter of the reformation under the good king Josiah who followed Amon.