What is the meaning of 2 Chronicles 21:18-20?

18 And after all this the LORD smote him in his bowels with an incurable disease. 19 And it came to pass, that in process of time, after the end of two years, his bowels fell out by reason of his sickness: so he died of sore diseases. And his people made no burning for him, like the burning of his fathers. 20 Thirty and two years old was he when he began to reign, and he reigned in Jerusalem eight years, and departed without being desired. Howbeit they buried him in the city of David, but not in the sepulchres of the kings. (2 Chronicles 21:18-20)

Thomas Scott’s Commentary

Verses 18-20. Jehoram lived to witness the fulfillment of the other most afflictive particulars of Elijah’s prophecy, and then he was seized with the predicted malady. (2Ch 21:12-15. Notes, De 28:61; Ac 12:20-23.) He was a young man, yet he could get no relief from the most painful and loathsome disease; and “he departed without being desired.” No one regretted his death, as none had desired his recovery; but the idolaters, and even his dependents, were glad to be relieved from his tyranny: they therefore burnt no sweet spices in honour of him, and refused to bury him among their former kings. (Marg. Ref.)