Zakharia 6:3

6:3 to the third white horses, and to the fourth spotted horses, all of them strong. ¹ 

Zakharia 6:7

6:7 All these strong ones ²  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.

[6:3]  ¹ tc For the MT reading אֲמֻצִּים (’amutsim, “strong”) Aquila and Syriac presuppose אֲדֻמִּים (’adummim, “red”), thus giving the red horse an assignment and eliminating the problem of a fifth, “spotted” horse. The fourth would be a mottled red horse according to this view. There is, however, no manuscript support for this interpretation.

[6:7]  ² tn The present translation takes אֲמֻצִּים (’amutsim, “strong”) to be a descriptive of all the horses – white, black, red, and spotted (cf. NAB, NIV, NLT).