Adam Clarke on Jeremiah 19:11

Even so will I break this people and this city - The breaking of the bottle was the symbolical representation of the destruction of the city and of the state.

That cannot be made whole again - This seems to refer rather to the final destruction of Jerusalem by the Romans, than to what was done by the Chaldeans. Jerusalem was healed after 70 years: but nearly 1800 years have elapsed since Jerusalem was taken and destroyed by the Romans; and it was then so broken, that it could not be made whole again.