Charles Ellicott Commentary Isaiah 29:2

"then will I distress Ariel, and there shall be mourning and lamentation; and she shall be unto me as Ariel." — Isaiah 29:2 (ASV)

And it shall be unto me as Ariel. —Better, But she (the city) shall be unto me as Ariel. That name would not falsify itself. In the midst of all her heaviness and sorrow, Jerusalem should still be as “the lion of God,” or, taking the other meaning, as the “altar-hearth” of God. (Compare to Ezekiel 43:15.)