Revelation 6
9 Ref And when the fifth stamp was undone, I saw under the altar the souls of those who had been put to death for the word of God, and for the witness which they kept.
10 Ref And they gave a great cry, saying, How long will it be, O Ruler, holy and true, before you take your place as judge and give punishment for our blood to those on the earth?
11 Ref And there was given to every one a white robe, and they were ordered to take their rest for a little time, till the number was complete of the other servants, their brothers, who would be put to death, even as they had been.