Revelation 7:9

“I will whistle for them to gather them together, For I have redeemed them; And they will be as numerous as they were before.

“But keep on the alert at all times, praying earnestly that you may have strength to escape all these things that are about to take place, and to stand before the Son of Man.”

‘But you have a few names in Sardis who have not defiled their garments, and they will walk with Me in white, for they are worthy.

And they *sang a new song, saying, “Worthy are You to take the scroll and to open its seals, because You were slain and purchased for God with Your blood people from every tribe and tongue and people and nation.

And a white robe was given to each of them; and it was told to them that they should rest for a little while longer, until the number of their fellow slaves and their brothers who were to be killed even as they had been, would be completed also.

Then one of the elders answered, saying to me, “These, clothed in the white robes, who are they, and from where have they come?”

And I said to him, “My lord, you know.” And he said to me, “These are the ones who come out of the great tribulation, and they washed their robes and made them white in the blood of the Lamb.

“For this reason, they are before the throne of God; and they serve Him day and night in His sanctuary; and He who sits on the throne will dwell over them.

A Multitude from Every Nation