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.

10290. 'And Jehovah said to Moses' means enlightenment and perception once again from the Lord through the Word. This is clear from the meaning of 'saying', when it refers to Jehovah, as enlightenment and perception (for its meaning enlightenment, see 7019, 10215, 10234, and for its meaning perception, 1791, 1815, 1819, 1822, 1898, 1919, 2080, 2862, 3509, 5877); and from the representation of 'Moses' as the Word, dealt with in 6752, 7014, 7089, 'Jehovah' in the Word being the Lord, see in the places referred to in 9373. From all this it is evident that 'Jehovah said to Moses' means enlightenment and perception from the Lord through the Word.

[2] These things are meant because the Lord speaks to a member of the Church in no other way than through the Word; for when He does so He sheds light to enable the person to see the truth, and also provides perception to enable him to perceive it to be such. How far He does so however is determined by the nature of the person's desire for truth, and that desire is determined by his love. Those who love truth for truth's sake possess enlightenment, and those who love truth for goodness' sake have perception. What perception is, see 483, 495, 521, 536, 597, 607, 784, 1121, 1387, 1919, 2144, 2145, 2171, 2515, 2831, 5228, 5920, 7680, 7977, 8780. But the Lord spoke to Moses and the prophets by word of mouth, to the end that the Word might be disseminated, its nature being such that every detail had an inner meaning. This also is the reason why these words, Jehovah said to Moses, are used. The angels, who discern that inner meaning, have no awareness of Moses, for the names of persons do not pass into heaven, 10282. Instead of Moses they perceive the Word, while the verb 'to say' is with them converted into something congruous with it, thus in this instance into 'to be enlightened' and 'to perceive'. Nothing else furthermore is understood, in the angelic way of thinking, by 'saying' or 'speaking' when done by the Lord through the Word.