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. For this reason,
For this reason they stand before God's throne, serve Him continually, and are sheltered by His presence.
This verse begins the promises flowing from their redeemed status.
9After this I looked and saw a multitude too large to count, from every nation and tribe and people and tongue, standing before the throne and before the Lamb. They were wearing white robes and holding palm branches in their hands. 10And they cried out in a loud voice: 11And all the angels stood around the throne and around the elders and the four living creatures. And they fell facedown before the throne and worshiped God, 12saying, “Amen! Blessing and glory and wisdom and thanks and honor and power and strength be to our God forever and ever! Amen.” 13Then one of the elders addressed me: “These in white robes,” he asked, “who are they, and where have they come from?” 14“Sir,” I answered, “you know.” 15So 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. For this reason, 16‘Never again will they hunger, 17For the Lamb in the center of the throne