18 And he walked in the way of the kings of Israel, as did the house of Ahab: for he had the daughter of Ahab to wife; and he did that which was evil in the sight of Jehovah. 19 Howbeit Jehovah would not destroy Judah, for David his servant's sake, as he promised him to give unto him a lamp for his children alway. 20 In his days Edom revolted from under the hand of Judah, and made a king over themselves. 21 Then Joram passed over to Zair, and all his chariots with him: and he rose up by night, and smote the Edomites that compassed him about, and the captains of the chariots; and the people fled to their tents. 22 So Edom revolted from under the hand of Judah unto this day. Then did Libnah revolt at the same time. 23 And the rest of the acts of Joram, and all that he did, are they not written in the book of the chronicles of the kings of Judah? 24 And Joram slept with his fathers, and was buried with his fathers in the city of David; and Ahaziah his son reigned in his stead.
25 In the twelfth year of Joram the son of Ahab king of Israel did Ahaziah the son of Jehoram king of Judah begin to reign. 26 Two and twenty years old was Ahaziah when he began to reign; and he reigned one year in Jerusalem. And his mother's name was Athaliah the daughter of Omri king of Israel.
Matthew Henry's Commentary on 2 Kings 8:18-26
Commentary on 2 Kings 8:16-24
(Read 2 Kings 8:16-24)
A general idea is given of Jehoram's badness. His father, no doubt, had him taught the true knowledge of the Lord, but did ill to marry him to the daughter of Ahab; no good could come of union with an idolatrous family.
Commentary on 2 Kings 8:25-29
(Read 2 Kings 8:25-29)
Names do not make natures, but it was bad for Jehoshaphat's family to borrow names from Ahab's. Ahaziah's relation to Ahab's family was the occasion of his wickedness and of his fall. When men choose wives for themselves, let them remember they are choosing mothers for their children. Providence so ordered it, that Ahaziah might be cut off with the house of Ahab, when the measure of their iniquity was full. Those who partake with sinners in their sin, must expect to partake with them in their plagues. May all the changes, troubles, and wickedness of the world, make us more earnest to obtain an interest in the salvation of Christ.