I looked up again and saw four chariots coming out from between two mountains; the mountains were made of bronze.
References for Zechariah 6:1
The first chariot had red horses, and the second chariot had black horses.
The third chariot had white horses, and the fourth chariot had horses that were heavily spotted.
I responded and said to the messenger speaking with me, "What are these, sir?"
The messenger answered and said to me, "These are the four winds of heaven that are going out after presenting themselves to the LORD of all the earth.
The one with the black horses is going to the north country; the white ones are going to the west; and the spotted ones are going south."
References for Zechariah 6:6
Then the powerful ones approached, intent on going to patrol the earth. He said, "Go! Patrol the earth!" So they patrolled the earth.
Then he called out and said to me, "Look, the ones going north have provided rest for my spirit in the north."