all the Levitical singers, Asaph, Heman, and Jeduthun, their sons and kindred, arrayed in fine linen, with cymbals, harps, and lyres, stood east of the altar with one hundred twenty priests who were trumpeters.
As I watched, thrones were set in place, and an Ancient One took his throne; his clothing was white as snow and the hair of his head like pure wool; his throne was fiery flames, and its wheels were burning fire.
I said to him, “Sir, you are the one who knows.” Then he said to me, “These are they who have come out of the great ordeal; they have washed their robes and made them white in the blood of the Lamb.