Zechariah 6:6-7

6:6 The chariot with the black horses is going to the north country and the white ones are going after them, but the spotted ones are going to the south country. 6:7 All these strong ones are scattering; they have sought permission to go and walk about over the earth.” The Lord had said, “Go! Walk about over the earth!” So they are doing so.

Zechariah 1:8

The Content of the First Vision

1:8 I was attentive that night and saw a man seated on a red horse that stood among some myrtle trees in the ravine. Behind him were red, sorrel, and white horses.

Daniel 2:33

2:33 Its legs were of iron; its feet were partly of iron and partly of clay.

Daniel 2:40-41

2:40 Then there will be a fourth kingdom, one strong like iron. Just like iron breaks in pieces and shatters everything, and as iron breaks in pieces all of these metals, so it will break in pieces and crush the others. 2:41 In that you were seeing feet and toes partly of wet clay and partly of iron, so this will be a divided kingdom. Some of the strength of iron will be in it, for you saw iron mixed with wet clay.

Revelation 6:8

6:8 So I looked and here came a pale green horse! The name of the one who rode it was Death, and Hades followed right behind. They were given authority over a fourth of the earth, to kill its population with the sword, famine, and disease, and by the wild animals of the earth.