Revelation 6:17

Who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap.

I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and peoples, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands. These are they which came out of great tribulation, and have washed their robes and made them white in the blood of the Lamb.