Matthew Henry's Complete Bible Commentary
Verses 21—25
We have little recorded concerning Amon, but enough unless it were better. Here is, MHBCC 401.10
I. His great wickedness. He did as Manasseh had done in the days of his apostasy, 2 Chronicles 33:22. Those who think this an evidence that Manasseh did not truly repent forget how many good kings had wicked sons. Only it should seem that Manasseh was in this defective, that, when he cast out the images, he did not utterly deface and destroy them, according to the law which required Israel to burn the images with fire, Deuteronomy 7:2. How necessary that law was this instance shows; for the carved images being only thrown by, and not burnt, Amon knew where to find them, soon set them up, and sacrificed to them. It is added, to represent him exceedingly sinful and to justify God in cutting him off so soon, 1. That he out-did his father in sinning: He trespassed more and more, 2 Chronicles 33:23. His father did ill, but he did worse. Those that were joined to idols grew more and more mad upon them. 2. That he came short of his father in repenting: He humbled not himself before the Lord, as his father had humbled himself. He fell like him, but did not get up again like him. It is not so much sin as impenitence in sin that ruins men, not so much that they offend as that they do not humble themselves for their offences, not the disease, but the neglect of the remedy. MHBCC 401.11
II. His speedy destruction. He reigned but two years and then his servants conspired against him and slew him, 2 Chronicles 33:24. Perhaps when Amon sinned as his father did in the beginning of his days he promised himself that he should repent as his father did in the latter end of his days. But his case shows what a madness it is to presume upon that. If he hoped to repent when he was old, he was wretchedly disappointed; for he was cut off when he was young. He rebelled against God, and his own servants rebelled against him. Herein God was righteous, but they were wicked, and justly did the people of the land put them to death as traitors. The lives of kings are particularly under the protection of Providence and the laws both of God and man. MHBCC 401.12