Zechariah 6:3-5

Young's Literal Translation

³ and in the third chariot white horses, and in the fourth chariot strong grisled horses.

⁴ And I answer and say unto the messenger who is speaking with me, `What [are] these, my lord?'

⁵ And the messenger answereth and saith unto me, `These [are] four spirits of the heavens coming forth from presenting themselves before the Lord of the whole earth.