Zechariah 6:5-8

5The angel told me, “These are the four spirits of heaven going out after presenting themselves to the Lord of the whole earth.

6The one with the black horses is going to the land of the north, the white horses are going after them, but the dappled horses are going to the land of the south.”

7As the strong horses went out, they wanted to go patrol the earth, and the Lord said, “Go, patrol the earth.” So they patrolled the earth.

8Then he summoned me saying, “See, those going to the land of the north have pacified my Spirit in the northern land.”