Revelation 7:13-14

Revised Standard Version

¹³ Then one of the elders addressed me, saying, “Who are these, clothed in white robes, and whence have they come?” ¹⁴ I said to him, “Sir, you know.” And he said to me, “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.