The four horsemen of the Apocalypse are described in Revelation 6: 1-8. The four horsemen are symbolic descriptions of different events which will take place in the end times. The first horseman of the Apocalypse is mentioned in Revelation 6 “And I saw, and behold a white horse: and he that sat on him had a bow; and a crown was given unto him: and he went forth conquering, and to conquer.” Revelation 6:2
This first horseman refers to the Antichrist, who will be given authority and will conquer all who oppose him. The antichrist is the false imitator of the true Christ, who will also return on a white horse (Revelation 19:11-16).
The second horseman of the Apocalypse appears in Revelation 6:4, “And there went out another horse that was red: and power was given to him that sat thereon to take peace from the earth, and that they should kill one another: and there was given unto him a great sword.”
The second horseman refers to terrible warfare that will break out in the end times. The third horseman is described in Revelation 6:5-6, “And when he had opened the third seal, I heard the third beast say, Come and see. And I beheld, and lo a black horse; and he that sat on him had a pair of balances in his hand. And I heard a voice in the midst of the four beasts say, A measure of wheat for a penny, and three measures of barley for a penny; and see thou hurt not the oil and the wine.”
The third horseman of the Apocalypse refers to a great famine that will take place, as a result of the wars from the second horseman.
The fourth horseman is mentioned in Revelation 6:8, “And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him. And power was given unto them over the fourth part of the earth, to kill with sword, and with hunger, and with death, and with the beasts of the earth.”
The fourth horseman of the Apocalypse is symbolic of death and devastation. It's a combination of the previous horsemen. The fourth horseman of the Apocalypse will bring further warfare and terrible famines along with awful plagues and diseases. What is most amazing, or perhaps terrifying, is that the four horsemen of the Apocalypse are just “precursors” of even worse judgments that come later in the tribulation (Revelation chapters 8–9 and 16).