2 Kings 12:20

“And his servants arose, etc.] This was after he had slain Zechariah the son of Jehoiada, who reproved him for his idolatry; and after a second expedition of the king of Syria, who came to Jerusalem, and spoiled it, and left Jehoash diseased, as is recorded in (<142423>2 Chronicles 24:23-26), and made a conspiracy; not to get the kingdom into their hands, for his son succeeded him, but to avenge the death of Zechariah; and slew Jehoash in the house of Millo, which goeth down to Silla; these are both names of places; perhaps the latter is mentioned, to distinguish this Bethmillo from Millo in Zion; or rather that itself is meant, and described by the descent from it to a causeway, as Silla may…”

“HE IS SLAIN. (Kg2 12:19-21) his servants arose . . . and slew Joash in the house of Millo--(See on Ch2 24:25). Next: 2 Kings Chapter 13”

“A conspiracy - Compare the marginal reference Joash, either from a suspicion of intended treason, or from some other unknown cause, took up his abode in the fortress of Millo 1 Kings 9:24. This conspiracy was connected with religion. Soon after the death of Jehoiada, Joash had apostatised; had renewed the worship of Baal; and, despite of many prophetic warnings, had persisted in his evil courses, even commanding Zechariah to be slain when he rebuked them 2 Chronicles 24:18-27. The conspirators, who wished to avenge Zechariah, no doubt wished also to put down the Baal worship. In this it appears that they succeeded. For, though Amaziah punished the actual murderers after a while 2 Kings 14:5,…”

“And slew Joash - We are told, in the Chronicles, that his murdering the prophet, Jehoiada's son, was the provocation. In this, how unrighteous so ever they were, yet the Lord was righteous. And this was not the only time, that he let even kings know, it was at their peril, if they touched his anointed, or did his prophets any harm. Thus fell Joash, who began in the spirit, and ended in the flesh. And indeed God usually sets marks of his displeasure upon apostates, even in this life. Next: 4 Kings (2 Kings) Chapter 13”

“12:20-21 The assassination of the king in 796 BC by some of his own officers was in reprisal for the murder of Jehoiada’s son Zechariah (2 Chr 24:21-22, 25). 12:20 Beth-millo: This district lay on a ridge of the eastern hill of Jerusalem in an area known as the City of David, where Solomon installed a series of supporting terraces (1 Kgs 9:15). • The road to Silla is otherwise unknown.”

“his servants: Kg2 14:5; Ch2 24:24, Ch2 24:25, Ch2 25:27, Ch2 33:24 the house of Millo: or, Beth-millo, Jdg 9:6; Sa2 5:9; Kg1 11:27 4 Kings (2 Kings) 12:21”