תהלים, פרק ס״ט, פסוק כ״ו

A severe curse is directed at the enemies as a punishment for the great harm they caused by persecuting the nation [מאירי] and attacking God's sanctuary. This consequence operates strictly measure for measure. Because these enemies damaged God's dwelling place, their own homes will be struck and left entirely empty of people [אלשיך].

The ruin targets every type of dwelling to emphasize the totality of the devastation. First, it addresses their grand, permanent structures, such as palaces, fortresses, and large public gathering places like council halls or temples of idolatry [רד״ק, מצודת ציון, שטיינזלץ, מלבי״ם]. These magnificent buildings are doomed to become completely desolate [מצודת ציון, שטיינזלץ]. Second, the curse extends to their simple, temporary tents that move from place to place. This stark contrast highlights an absolute downfall: not only will their mighty strongholds be abandoned, but they will not even have a fragile tent left for shelter [מלבי״ם].

Ultimately, the core of this punishment is not focused on tearing down the physical buildings, but on wiping out the people living inside them. The grand structures and temporary tents might actually remain perfectly intact. However, they will stand completely empty, as the enemies themselves will be destroyed, leaving no one behind to inhabit their homes [אלשיך].