Rabbi Ishmael also said: Three wars of trouble will the sons of Ishmael in the future wage on the earth in the latter days, as it is said, "For they fled away from the swords" (Isa. 21:15). "Swords" signify only wars, one in the forest of Arabia, as it is said, "From the drawn sword" (ibid.); another on the sea, as it is said, "From the bent bow" (ibid.); and one in the great city which is in Rome, which will be more grievous than the other two, as it is said, "And from the grievousness of the war" (ibid.).
From there the Son of David shall flourish and see the destruction of these and these, and thence will He come to the land of Israel, as it is said, "Who is this that cometh from Edom, with crimsoned garments from Bozrah? this that is glorious in his apparel, marching in the greatness of his strength? I that speak in righteousness, mighty to save" (Isa. 63:1).