Who created the seven heavens one upon another. You will see no incongruity in the Merciful One’s creation. Turn your vision again, can you see any flaw?

Then turn your vision again, and then again; in the end your vision will come back to you, worn out and frustrated.
We have adorned the lower heaven with lamps, and have made them a means to drive away the satans. We have prepared for them the chastisement of the Blazing Fire.(67:3-5)