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.
Joel 1:15-20
15
Alas for the day! For the day of Yahweh is at hand, and it will come as destruction from the Almighty.
16
Isn't the food cut off before our eyes; joy and gladness from the house of our God?
17
The seeds rot under their clods. The granaries are laid desolate. The barns are broken down, for the grain has withered.
18
How the animals groan! The herds of livestock are perplexed, because they have no pasture. Yes, the flocks of sheep are made desolate.
19
Yahweh, I cry to you, For the fire has devoured the pastures of the wilderness, and the flame has burned all the trees of the field.
20
Yes, the animals of the field pant to you, for the water brooks have dried up, And the fire has devoured the pastures of the wilderness.
