He — The enemy. Covering — He took those fenced cities, which were a covering or safe — guard both to the people of Judah, and to Jerusalem. The armour — Thy trust was placed in the arm of flesh. The forest — More fully called the house of the forest of Lebanon, 1 Kings 7:2, not because it was built in Lebanon, for it was in Jerusalem; but because it was built of the trees of Lebanon.
Related Commentaries of Isaiah 22:8
Isaiah 22:8
8 And he discovered the covering of Judah, and thou didst look in that day to the armour of the house of the forest.