In dreams, horses typically represent a move of God marked by significant power. They are incredibly strong and are highly perceptive. Depending on the color of the horse, that could give more details as to the nature of that movement. But nearly all the time, horses are used to represent unstoppable power being ushered in and having significant influence.
If the horse has a rider, that broadens the use of this metaphor just a bit more. This is usually a picture of a messenger, a watcher, a patrolman…someone on assignment. If it’s several horses with several riders, think more along the lines of an army.
In Zechariah Chapter 6, horses are pictured with chariots, as being instruments that patrol, watch, protect, and ultimately give rest. Chariots were not used for transporting goods, but for war.
Linda G Riddle 
In September of 2020 I was visiting Oregon for my sons wedding. I was staying in an AirBNB. I dreamed that I was in my kitchen at home in Florida. It was dark but I could see through my window over my kitchen sink a large group of people all dressed in black coming across my back yard. A large black horse that had a rider was leading them. This horse came through my backporch and back door like a hologram. This horse was massive and I felt like had I reached out, I could have touched it. It was so massive. The rider would have hit his head on my ceiling except it was a hologram.
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