Matthew Henry's Concise Commentary

21:19-26 Amon profaned God's house with his idols; and God suffered his house to be polluted with his blood. How unrighteous soever they were that did it, God was righteous who suffered it to be done. Now was a happy change from one of the worst, to one of the best of the kings of Judah. Once more Judah was tried with a reformation. Whether the Lord bears long with presumptuous offenders, or speedily cuts them off in their sins, all must perish who persist in refusing to walk in his ways.