14 I told him, “My lord, you know.” He said to me, “These are those who came out of the great oppression. They washed their robes, and made them white in the Lamb’s blood.
they have washed their robes – in Rev 12:11, we are told that those in the Great Tribulation overcame “because of the blood of the Lamb.” They obtained salvation, even though they were not sanctified by the spirit of God.