3. sanctified ones--the Median and Persian soldiers solemnly set apart by Me for the destruction of Babylon, not inwardly "sanctified," but designated to fulfil God's holy purpose (Jer 51:27, 28; Joe 3:9, 11; where the Hebrew for prepare war is "sanctify" war).
      for mine anger--to execute it.
      rejoice in my highness--"Those who are made to triumph for My honor" [HORSLEY]. The heathenMedes could not be said to "rejoice in God's highness" MAURER translates, "My haughtily exulting ones" (Zep 3:11); a special characteristic of the Persians [HERODOTUS,1.88]. They rejoiced in their own highness, but it was His that they were unconsciously glorifying.

JFB.