And his servants arose,.... 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 2 Chronicles 24:23,
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 signify, which led to the royal palace.