Revelation 7:13-15

New Revised Standard Version, Anglicised Catholic Edition

¹³ Then one of the elders addressed me, saying, ‘Who are these, robed in white, and where have they come from?’ ¹⁴ I said to him, ‘Sir, you are the one that knows.’ Then he said to me, ‘These are they who have come out of the great ordeal; they have washed their robes and made them white in the blood of the Lamb.