What does Revelation 19:13 mean?

Jesus has returned, this time as a conquering King and the unquestioned Lord of lords. John observes that Jesus' robe was dipped in blood. This is not a reference to the blood He shed on the cross for our sins. Rather, given the military context of this vision, it is the blood of his enemies. Isaiah 63:2–3 prophesies this event with a question and an answer. Verse 2 asks: "Why is your apparel red, and your garments like his who treads in the winepress?" Verse 3 provides the answer: "I have trodden the winepress alone, and from the peoples no one was with me; I trod them in my anger and trampled them in my wrath; their lifeblood spattered on my garments, and stained all my apparel."

At His first coming Jesus filled the role of the Lamb of God and shed His blood for our sins. At His second coming He will fill the role of the Lion of the tribe of Judah and devour His enemies because of their sins. As He roars against His foes, another of His names is prominent: "the Word of God." This title clearly identifies the rider on a white horse here as Jesus, who came to earth the first time as God in the flesh but was rejected by the world (John 1:1–2, 10–11, 14).