John Wesley on Ezekiel 39:9

The weapons - The warlike provision, instruments, engines, carriages and wagons. Shall burn - It may be wondered why they burn these weapons, which might be of use to them for defence; but it was done in testimony that God was their defence, on whom only they relied. With fire - In such a country where the need of fire is much less than with us, it will not seem incredible, that the warlike utensils of so numerous an army might be enough to furnish them with fuel for many years.