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.
Deuteronomy 30:7-10
7
Yahweh your God will put all these curses on your enemies, and on those who hate you, who persecuted you.
8
You shall return and obey the voice of Yahweh, and do all his commandments which I command you this day.
9
Yahweh your God will make you plenteous in all the work of your hand, in the fruit of your body, and in the fruit of your livestock, and in the fruit of your ground, for good: for Yahweh will again rejoice over you for good, as he rejoiced over your fathers;
10
if you shall obey the voice of Yahweh your God, to keep his commandments and his statutes which are written in this book of the law; if you turn to Yahweh your God with all your heart, and with all your soul.
