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 19:18-20
18
In that day, there will be five cities in the land of Egypt that speak the language of Canaan, and swear to Yahweh of Armies. One will be called "The city of destruction."
19
In that day, there will be an altar to Yahweh in the midst of the land of Egypt, and a pillar to Yahweh at its border.
20
It will be for a sign and for a witness to Yahweh of Armies in the land of Egypt; for they will cry to Yahweh because of oppressors, and he will send them a savior and a defender, and he will deliver them.
