14 I said to him, “Sir, you know.”
Then he told me:
These are the ones coming out of the great tribulation.
They washed their robes and made them white
in the blood of the Lamb.
The elder replies to John and tells him that the multitude are believers in Jesus Christ that got saved during the great tribulation and who didn’t receive the mark (666 or his name) of the beast (Revelation 14:9-11).
Believe it or not the words in verse 9 “vast multitude” suggest that many people will come to faith during the great tribulation.
It seems that the more Satan tries to put out the fire of the gospel, the spreading of the truth, is when more people come to saving faith in Jesus Christ. Like Jesus said in Matthew 16:18 that not even the gates of hell (Satan and his forces) will be able to destroy the church, believers who preach the truth.
15 For this reason they are before the throne of God, and they serve Him day and night in His sanctuary. The One seated on the throne will shelter them:
Since they got saved during the great tribulation and died remaining faithful to Jesus it showed great and unprecedented faith in the face of death. Jesus will shower them with great honor by having them serve Him in His presence. Now for all eternity, they will be protected by God Himself.
16 They will no longer hunger; they will no longer thirst; the sun will no longer strike them, nor will any heat.
God’s protection is described not only for the Christians who will come out of the great tribulation but also for those that believed in Yahweh (minimal revelation or light), the saints of the Old Testament and believers of the New Testament (the full revelation) that believed in Jesus Christ are going to be protected by Almighty God.
This protection takes place or is referred to when God creates the new heaven and earth as seen in Revelation 21:1,23
17 For the Lamb who is at the center of the throne will shepherd them; He will guide them to springs of living waters, and God will wipe away every tear from their eyes.
The phrase “For the Lamb who is at the center of the throne” refers to Jesus being the focal point in heaven because He is God as it is revealed when the same verse uses the word “God” wiping away their tears which in Revelation 21:3-4 reaffirms that it is God who wipes away their tears and then it continues with verse 6 of the same chapter the text revealing that it is Jesus who is being spoken of as wiping every tear by saying “I am the Alpha and the Omega, the Beginning and the End.” The Alpha and Omega is a reference to Jesus Christ in Revelation 1:8, 17-18.