What is the meaning of Revelation 7:14?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

“Sir,” I answered, “you know.” So he replied, “These are the ones who have come out of the great tribulation; they have washed their robes and made them white in the blood of the Lamb.

Berean Standard Bible (BSB)

I told him, “My lord, you know.” He said to me, “These are those who came out of the great tribulation. They washed their robes, and made them white in the Lamb’s blood.

World English Bible (WEB)

And{G2532} I said{G2046}{(G5758)} unto him{G846}, Sir{G2962}, thou{G4771} knowest{G1492}{(G5758)}. And{G2532} he said{G2036}{(G5627)} to me{G3427}, These{G3778} are they{G1526}{(G5748)} which came{G2064}{(G5740)} out of{G1537} great{G3173} tribulation{G2347}, and{G2532} have washed{G4150}{(G5656)} their{G846} robes{G4749}, and{G2532} made{G3021} them{G4749}{G846} white{G3021}{(G5656)} in{G1722} the blood{G129} of the Lamb{G721}.

Strong's King James

(14) I say to him, "My master, you know!" He said to me, "These are the ones who come from the great affliction. They washed their flowing robes and made them white in the blood of The Lamb!"

The F.O.G*

[14] I responded, "My lord, you know the answer." He explained, "These are the ones who have come out of the great tribulation. They have washed their robes in the Lamb's blood, making them pure and white.

The F.O.G Paraphrase

and I have said to him, ‘Sir, thou hast known;’ and he said to me, ‘These are those who are coming out of the great tribulation, and they did wash their robes, and they made their robes white in the blood of the Lamb;

Young's Literal Translation