Isaiah 4:3-5

And it shall come to pass that he who is left in Zion and remains in Jerusalem will be called holy—everyone who is recorded among the living in Jerusalem. When the Lord has washed away the filth of the daughters of Zion, and purged the blood of Jerusalem from her midst, by the spirit of judgment and by the spirit of burning, then the LORD will create above every dwelling place of Mount Zion, and above her assemblies, a cloud and smoke by day and the shining of a flaming fire by night. For over all the glory there will be a covering.