'White' in the Bible

"I stared into the night, and there was a man mounted on a red horse! The horse was standing among the myrtle trees in a ravine. Behind him there were red, brown, and white horses."

Attached to the third chariot were white horses. Attached to the fourth chariot were speckled horses and gray horses.

The black horses are headed into the north country, and the white ones are headed out after them. The speckled horses are headed toward the south country."