788. 18:19 "And they put dust on their heads and cried out, weeping and mourning, and saying, 'Woe, woe, that great city!'" This symbolizes their interior and exterior grief and mourning, which is a lamentation that so eminent a religion was completely destroyed and condemned.

Putting dust on their heads symbolizes their interior and exterior grief and mourning over the destruction and damnation, as we will show below. To cry out, weeping and mourning, symbolizes their exterior grief and mourning - to weep symbolizing a mourning of the soul, and to grieve a grief of the heart. "Woe, woe, that great city!" symbolizes a grievous lamentation over the destruction and damnation. That "woe" symbolizes a lamentation over a calamity, misfortune, or damnation, and that "woe, woe," therefore symbolizes a grievous lamentation, may be seen in nos. 416, 769, 785; and that the city symbolizes the Roman Catholic religion may be seen in no. 785 and elsewhere.

That putting dust on the head symbolizes an interior grief and mourning over a destruction and damnation is clear from the following passages:

They will cry bitterly and cast dust on their heads; they will roll about in ashes. (Ezekiel 27:30)

(The daughters) of Zion sit on the ground...; they have cast dust on their heads... (Lamentations 2:10)

(Job's friends) rent their tunics and sprinkled dust upon their heads... (Job 2:12)

Come down and sit in the dust, O virgin daughter of Babylon; sit on the ground without a throne... (Isaiah 47:1)

And so on elsewhere.

The people put dust on their heads when they grieved deeply, because dust symbolized something damned, as is apparent from Genesis 3:14, Matthew 10:14, Mark 6:11, Luke 10:10-12, and dust on the head represented the people's acknowledgment that of themselves they were damned, and thus their repentance, as in Matthew 11:21, Luke 10:13.

Dust symbolizes something damned because the land over the hells in the spiritual world consists of nothing but dust, without grass or plants.

To “dwell” somewhere, then, is significant – it’s much more than just visiting – but is less permanent than living there. And indeed, to dwell somewhere in the Bible represents entering that spiritual state and engaging it, but not necessary permanently. A “dwelling,” meanwhile, represents the various loves that inspire the person who inhabits it, from the most evil – “those dwelling in the shadow of death” in Isaiah 9, for example – to the exalted state of the tabernacle itself, which was built as a dwelling-place for the Lord and represents heaven in all its details. Many people were nomadic in Biblical times, especially the times of the Old Testament, and lived in tents that could be struck, moved and raised quickly. Others, of course, lived in houses, generally made of stone and wood and quite permanent. In between the two were larger, more elaborate tent-style structures called tabernacles or dwellings; the tabernacle Moses built for the Ark of the Covenant is on this model.