Zechariah 6:3-6

3The third chariot had white horses and the fourth chariot had grey horses. All the horses were strong.

4Then I spoke to the angel that talked to me. I asked him, ‘What are these chariots, my lord?’

5The angel answered me, ‘These are the four spirits of heaven. They have come from the Lord of the whole world.

6The chariot with the black horses goes towards the north country. The chariot with the white horses goes after them. The chariot with the grey horses goes towards the south country.’