Revelation Chapter 7 American Standard-ASV1901
And I saw another angel ascend from the sunrising, having the seal of the living God: and he cried with a great voice to the four angels to whom it was given to hurt the earth and the sea,
After these things I saw, and behold, a great multitude, which no man could number, out of every nation and of `all' tribes and peoples and tongues, standing before the throne and before the Lamb, arrayed in white robes, and palms in their hands;
And I say unto him, My lord, thou knowest. And he said to me, These are they that come of the great tribulation, and they washed their robes, and made them white in the blood of the Lamb.