In Context

9 After this I saw a great multitude, which no man could number, of all nations, and tribes, and peoples, and tongues, standing before the throne, and in sight of the Lamb, clothed with white robes, and palms in their hands:

10 And they cried with a loud voice, saying: Salvation to our God, who sitteth upon the throne, and to the Lamb.

11 And all the angels stood round about the throne, and the ancients, and the four living creatures; and they fell down before the throne upon their faces, and adored God,

12 Saying: Amen. Benediction, and glory, and wisdom, and thanksgiving, honour, and power, and strength to our God for ever and ever. Amen.

13 And one of the ancients answered, and said to me: These that are clothed in white robes, who are they? and whence came they?

14 And I said to him: My Lord, thou knowest. And he said to me: These are they who are come out of great tribulation, and have washed their robes, and have made them white in the blood of the Lamb.

Revelation 7:12 in Other Translations