8 In the time of Jehoram, Edom rebelled against Judah and set up its own king. 9 So Jehoram went there with his officers and all his chariots. The Edomites surrounded him and his chariot commanders, but he rose up and broke through by night. 10 To this day Edom has been in rebellion against Judah. Libnah revolted at the same time, because Jehoram had forsaken the Lord, the God of his ancestors. 11 He had also built high places on the hills of Judah and had caused the people of Jerusalem to prostitute themselves and had led Judah astray.

12 Jehoram received a letter from Elijah the prophet, which said: "This is what the Lord, the God of your father David, says: 'You have not followed the ways of your father Jehoshaphat or of Asa king of Judah. 13 But you have followed the ways of the kings of Israel, and you have led Judah and the people of Jerusalem to prostitute themselves, just as the house of Ahab did. You have also murdered your own brothers, members of your own family, men who were better than you. 14 So now the Lord is about to strike your people, your sons, your wives and everything that is yours, with a heavy blow. 15 You yourself will be very ill with a lingering disease of the bowels, until the disease causes your bowels to come out.' " 16 The Lord aroused against Jehoram the hostility of the Philistines and of the Arabs who lived near the Cushites. 17 They attacked Judah, invaded it and carried off all the goods found in the king's palace, together with his sons and wives. Not a son was left to him except Ahaziah,[1] the youngest.

Matthew Henry's Commentary on 2 Chronicles 21:8-17

Commentary on 2 Chronicles 21:1-11

(Read 2 Chronicles 21:1-11)

Jehoram hated his brethren, and slew them, for the same reason that Cain hated Abel, and slew him, because their piety condemned his impiety. In the mystery of Providence such men sometimes prosper for a time; but the Lord has righteous purposes in permitting such events, part of which may now be made out, and the rest will be seen hereafter.

Commentary on 2 Chronicles 21:12-20

(Read 2 Chronicles 21:12-20)

A warning from God was sent to Jehoram. The Spirit of prophecy might direct Elijah to prepare this writing in the foresight of Jehoram's crimes. He is plainly told that his sin should certainly ruin him. But no marvel that sinners are not frightened from sin, and to repentance, by the threatenings of misery in another world, when the certainty of misery in this world, the sinking of their estates, and the ruin of their health, will not restrain them from vicious courses. See Jehoram here stripped of all his comforts. Thus God plainly showed that the controversy was with him, and his house. He had slain all his brethren to strengthen himself; now, all his sons are slain but one. David's house must not be wholly destroyed, like those of Israel's kings, because a blessing was in it; that of the Messiah. Good men may be afflicted with diseases; but to them they are fatherly chastisements, and by the support of Divine consolations the soul may dwell at ease, even when the body lies in pain. To be sick and poor, sick and solitary, but especially to be sick and in sin, sick and under the curse of God, sick and without grace to bear it, is a most deplorable case. Wickedness and profaneness make men despicable, even in the eyes of those who have but little religion.