John Calvin on Amos 1:14

I will therefore kindle a fire in the wall of רבה, Rabe, which shall devour its palaces, (the Prophet adds nothing new, I shall therefore go on,) and this by tumult, or by clamour, in the day of war. The Prophet means that enemies would come and suddenly lay waste the kingdom of Ammon; and that this would be the case, as a sudden fire lays hold on wood, in the day of war; that is as soon as the enemy attacked them, it would immediately put them to fight, and execute the vengeance they deserved, by a whirlwind in the day of tempest By these figurative terms the Prophet intimates that the calamity destructive to the Ammonites, would be sudden.