Horse
In Ezekiel 26:11, this signifies the love of learning or intellectual things. (Arcana Coelestia 3727)
In Revelation 6:2, this signifies the love of understanding the Word. (Apocalypse Revealed 298)
In Zechariah 12:4, this signifies that the intellectual should be filled with falsities. (Arcana Coelestia 2383[2])
In general, 'a horse' signifies knowledge or understanding of the Word. In an opposite sense it signifies the understanding of the Word falsified by reasonings, and likewise destroyed from self-derived intelligence. 'A dead horse' signifies no understanding of truth from the Word.
Isaiah 2:10-18
10
Enter into the rock, and hide in the dust, from before the terror of Yahweh, and from the glory of his majesty.
11
The lofty looks of man will be brought low, the haughtiness of men will be bowed down, and Yahweh alone will be exalted in that day.
12
For there will be a day of Yahweh of Armies for all that is proud and haughty, and for all that is lifted up; and it shall be brought low:
13
For all the cedars of Lebanon, that are high and lifted up, for all the oaks of Bashan,
14
For all the high mountains, for all the hills that are lifted up,
15
For every lofty tower, for every fortified wall,
16
For all the ships of Tarshish, and for all pleasant imagery.
17
The loftiness of man shall be bowed down, and the haughtiness of men shall be brought low; and Yahweh alone shall be exalted in that day.
18
The idols shall utterly pass away.
