After receiving his commission in Isaiah 6, what did Isaiah ask the Lord?

Answer: How long, O Lord?

Isaiah asked, "How long, O Lord?" The answer: until the cities lie ruined and without inhabitant and the land is desolate.

“Then I asked: “How long, O Lord?” And He replied: “Until the cities lie ruined and without inhabitant, until the houses are left unoccupied and the land is desolate and ravaged,”— Isaiah 6:11 (BSB)