Commentaries
22:1-12 The reign of Ahaziah, Athaliah destroys the royal family. - The counsel of the ungodly ruins many young persons when they are setting out in the world. Ahaziah gave himself up to be led by evil men. Those who advise us to do wickedly, counsel us to our destruction; while they pretend to be friends, they are our worst enemies. See and dread the mischief of bad company. If not the infection, yet let the destruction be feared, Re 18:4. We have here, a wicked woman endeavouring to destroy the house of David, and a good woman preserving it. No word of God shall fall to the ground. The whole truth of the prophecies that the Messiah was to come from David, and thereby the salvation of the world, appeared to be now hung upon the brittle thread of the life of a single infant, to destroy whom was the interest of the reigning power. But God had purposed, and vain were the efforts of earth and hell.
2. Forty and two years old was Ahaziah when he began to reign—(Compare 2Ki 8:26). According to that passage, the commencement of his reign is dated in the twenty-second year of his age, and, according to this, in the forty-second year of the kingdom of his mother's family [Lightfoot]. "If Ahaziah ascended the throne in the twenty-second year of his life, he must have been born in his father's nineteenth year. Hence, it may seem strange that he had older brothers; but in the East they marry early, and royal princes had, besides the wife of the first rank, usually concubines, as Jehoram had (2Ch 21:17); he might, therefore, in the nineteenth year of his age, very well have several sons" [Keil] (compare 2Ch 21:20; 2Ki 8:17).
Athaliah the daughter of Omri—more properly, "granddaughter." The expression is used loosely, as the statement was made simply for the purpose of intimating that she belonged to that idolatrous race.