Isaiah 26:1 - Matthew Poole's English Annotations on the Holy Bible

ISAIAH CHAPTER 26 A song of praise and confidence in God, for the blessings of righteousness, judgments on their enemies, and favour to his people: their chastisement, repentance, and hope. In that day, when God shall do such glorious works for the comfort of his people, and for the ruin of his and their enemies, as he hath described in the foregoing chapter. In the land of Judah; in the church of God, which in Scripture is oft signified by the titles of Judah, and Jerusalem, and Zion, or the like. A strong city; Jerusalem, or the church, which is oft called or compared to a city, as Psalms 87:3 Revelation 3:12, Revelation 11:2 21:2. Salvation will God appoint for walls and bulwarks; God's immediate and saving protection shall be to his church instead of walls, &c. But I conceive, with submission, the words may very fitly be thus rendered, He will send, or put, or make her walls and bulwarks salvation, i.e. as safe as salvation itself; or, in safety, there being only a defect of the preposition, which is very frequent in Scripture.