Revelation 6:2
And I looked and a white horse appeared, and its rider carried a bow; and a victor's wreath was given to him; and he went out conquering and in order to conquer.
Revelation 6:8
I looked and a pale-colored horse appeared. Its rider's name was Death, and Hades came close behind him; and authority was given to them over the fourth part of the earth, to kill with the sword or with famine or pestilence or by means of the wild beasts of the earth.
Revelation 19:11
Then I saw a door open in Heaven, and a white horse appeared. Its rider was named "Faithful and True" --being One who in righteousness acts as Judge, and makes war.
Revelation 20:11
Then I saw a great white throne and One who was seated on it, from whose presence earth and sky fled away, and no place was found for them.