Revelation 6:3, 5, 7

When He (the Lamb) broke the second seal, I heard the second living creature call out, “Come.”

When He (the Lamb) broke open the third seal, I heard the third living creature call out, “Come.” I looked, and behold, a black horse [of famine]; and the rider had in his hand a pair of scales (a balance). [Zech 6:1-8]

When He (the Lamb) broke open the fourth seal, I heard the voice of the fourth living creature call out, “Come.”