2 Maccabees 3:25
20 And holding up their hands to heaven, they all made supplication. 21 There was something pitiable in the prostration of the whole populace and the anxiety of the high priest in his great anguish. 22 While they were calling upon the Almighty Lord that he would keep what had been entrusted safe and secure for those who had entrusted it, 23 Heliodorus went on with what had been decided. 24 But when he arrived at the treasury with his bodyguard, then and there the Sovereign of spirits and of all authority caused so great a manifestation that all who had been so bold as to accompany him were astounded by the power of God, and became faint with terror. 25 For there appeared to them a magnificently caparisoned horse, with a rider of frightening mien; it rushed furiously at Heliodorus and struck at him with its front hoofs. Its rider was seen to have armor and weapons of gold. 26 Two young men also appeared to him, remarkably strong, gloriously beautiful and splendidly dressed, who stood on either side of him and flogged him continuously, inflicting many blows on him.
Revelation 19:11
11 Then I saw heaven opened and here came a white horse! The one riding it was called “Faithful” and “True,” and with justice he judges and goes to war. 12 His eyes are like a fiery flame and there are many diadem crowns on his head. He has a name written that no one knows except himself. 13 He is dressed in clothing dipped in blood, and he is called the Word of God. 14 The armies that are in heaven, dressed in white, clean, fine linen, were following him on white horses. 15 From his mouth extends a sharp sword so that with it he can strike the nations. He will rule them with an iron rod, and he stomps the winepress of the furious wrath of God, the All-Powerful. 16 He has a name written on his clothing and on his thigh: “King of kings and Lord of lords.” 17 Then I saw one angel standing in the sun, and he shouted in a loud voice to all the birds flying high in the sky: “Come, gather around for the great banquet of God, 18 to eat your fill of the flesh of kings, the flesh of generals, the flesh of powerful people, the flesh of horses and those who ride them, and the flesh of all people, both free and slave, and small and great!”
Notes and References
"... Roman princes customarily rode white horses in military triumphs; the emperor Domitian had himself ridden one behind his father and brother in their Judean triumph after the Jewish war of 66–70. But the image of Jesus returning on a white horse, conjoined with the title “King of kings” (19:16), may mean that Jesus is portrayed like the Parthian king (compare 6:2; 17:14), his whole army coming on white horses (19:14). That is, Revelation again employs the most feared imagery of the day to communicate its point. The pretentious claims of the emperor and all who were like him would be nothing before the true divine king from heaven. The image may allude to God going forth as a warrior on behalf of his people (e.g., Isaiah 31:4; 42:13; 59:16-18; Habakkuk 3:11-13; Zechariah 14:3; compare Exodus 15:3). This is the ultimate “holy war,” anticipated in the Old Testament, in the Dead Sea Scrolls, by the Zealots and by many other Jewish people, although not all these sources expected the deliverance and armies to come directly from heaven ..."
Keener, Craig S. The IVP Bible Background Commentary: New Testament (p. 768) InterVarsity Press, 2014