(12) And the altars that were on the top (roof) of the upper chamber of Ahaz.--The roof of an upper chamber in one of the Temple courts. perhaps built over one of the gateways (comp. Jeremiah 35:4), appears to be meant. The altars were for star-worship, which was especially practised on housetops. (Comp. Jeremiah 19:13; Jeremiah 32:29; Zephaniah 1:5.)

Brake them down from thence.--The Targum has removed from thence; the LXX. pulled them down from thence (??????????). The Hebrew probably means ran from thence; marking the haste with which the work was done. The clause thus adds a vivid touch to the narrative. It is hardly necessary to alter the points with Kimchi and Thenius, so as to read, he caused to run from thence; i.e., hurried them away.

Cast the dust of them.--Over the wall of the Temple enclosure, into the ravine beneath.

Verse 12. - And the altars that were on the top of the upper chamber of Ahaz. It would seem that "the upper chamber of Ahaz" was within the temple precincts, since the pollutions spoken of, both before and after, are pollutions belonging to the temple. It may have been erected on the flat roof of one of the gates, or on the top of a store-chamber. Altars upon roofs were a new form of idolatry, apparently connected with the worship of the "host of heaven" (see Jeremiah 19:13; Zephaniah 1:5). Which the kings of Judah - i.e. Manasseh and Amen, perhaps also Ahaz - had made, and the altars which Manasseh had made in the two courts of the house of the Lord (see above, 2 Kings 21:4, 5). As Manasseh, on his repentance, merely "cast these altars out of the city" (2 Chronicles 33:15), it was easy for Amen to replace them. They belonged to the worship of the "host of heaven." Did the king beat down, and brake them down from thence, and east the dust of them into the brook Kidron (comp. ver. 6, and the comment ad loc.).

23:4-14 What abundance of wickedness in Judah and Jerusalem! One would not have believed it possible, that in Judah, where God was known, in Israel, where his name was great, in Salem, in Zion, where his dwelling-place was, such abominations should be found. Josiah had reigned eighteen years, and had himself set the people a good example, and kept up religion according to the Divine law; yet, when he came to search for idolatry, the depth and extent were very great. Both common history, and the records of God's word, teach, that all the real godliness or goodness ever found on earth, is derived from the new-creating Spirit of Jesus Christ.And the altars that were on the top of the upper chamber of Ahaz, which the kings of Judah had made,.... Which were on the roof of the royal palace; the roofs of houses in Judah being flat, Deuteronomy 21:8 altars might be built upon them; so, in Arabia, altars were built on the tops of houses to offer incense thereon daily to the sun (p); as here by Manasseh and Amon very probably, which might be chosen because nearer the heavens; for which reason the Heathens made use of high places to worship in, see Jeremiah 19:13.

and the altars which Manasseh had made in the two courts of the house of the Lord; 2 Kings 21:5.

did the king beat down; ordered to be demolished:

and brake them down from thence, and cast the dust of them into the brook Kidron; that there might be no remains of them to be put to any superstitious use.

(p) Strabo, Geograph l. 16. p. 539.