Matthew Henry on 2 Kings 21:19–end
Here is a short account of the short and inglorious reign of Amon, the son of Manasseh. Whether Manasseh, in his blind and brutish zeal for his idols, had sacrificed his other sons - or whether, having been dedicated to his idols, they were refused by the people - so it was that his successor was a son not born till he was forty-five years old. And of him we are here told, 1. That his reign was very wicked: He forsook the God of his fathers (Kg2 21:22), disobeyed the commands given to his fathers, and disclaimed the covenant made with his fathers, and walked not in the way of the Lord, but in all the way which his father walked in, Kg2 21:20, Kg2 21:21. He trod in the steps of his father's i…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Kings 21:19
AMON'S WICKED REIGN. (Kg2 21:19-26)
Amon was twenty and two years old when he began to reign--This prince continued the idolatrous policy of his father; and, after an inglorious reign of two years, he was massacred by some of his own domestics. The people slew the regicide conspirators and placed his son Josiah on the throne.
Next: 2 Kings Chapter 22
Adam Clarke on 2 Kings 21:23
The servants of Amon conspired - What their reason was for slaying their king we cannot tell. It does not seem to have been a popular act, for the people of the land rose up and slew the regicides. We hear enough of this man when we hear that he was as bad as his father was in the beginning of his reign, but did not copy his father's repentance.
John Gill on 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? See Gill on 2 Kings 21:17.
Keil & Delitzsch on 2 Kings 21:23-25
His servants conspired against him and slew him in his palace; whereupon the people of the land, i.e., the population of Judah (הארץ עם = יהוּדה עם, Ch2 26:1), put the conspirators to death and made Josiah the son of Amon king, when he was only eight years old.