And he discovered the covering of Judah,.... Either God himself, who uncloaked them of their hypocrisy, as Dr. Lightfoot; or took away his power and presence from them, and his protection of them, and discovered their weakness; or rather the enemy Sennacherib: and then by the covering is meant, not Jerusalem, nor the temple, as Jarchi and Kimchi, for neither of them came into his hands; but the fenced cities of Judah, which were the strength and protection of the country; these he took and dismantled, 2Ki 18:13 and when this was done, it was high time for the Jews at Jerusalem to look about them, and provide for their defence and safety:and thou, didst look in that day to the armour of the house of the forest; to see what store of armour they had, in what condition it was, and to take from hence, and furnish themselves and soldiers with it, to annoy the enemy, and defend themselves.
This house of the forest is the same with the house of the forest of Lebanon; so called, not because built in it, for it was in Jerusalem, but because it was built of the wood of Lebanon; or because it was surrounded with trees, and had walks and groves belonging to it, resembling that forest.