Revelation 7:11-14

11All the angels were standing around the throne and around the elders and the four living creatures. They fell down on their faces before the throne and worshiped God,

12saying: “Amen! Praise and glory and wisdom and thanks and honor and power and strength be to our God for ever and ever. Amen!”

13Then one of the elders asked me, “These in white robes—who are they, and where did they come from?”

14I answered, “Sir, you know.” And he said, “These are they who have come out of the great tribulation; they have washed their robes and made them white in the blood of the Lamb.