Revelation 7:4-17
And I heard the number of the sealed, a hundred and forty-four thousand sealed, out of every tribe of the sons of Israel, twelve thousand sealed out of the tribe of Judah, twelve thousand of the tribe of Reuben, twelve thousand of the tribe of Gad, twelve thousand of the tribe of Asher, twelve thousand of the tribe of Naph'tali, twelve thousand of the tribe of Manas'seh, twelve thousand of the tribe of Simeon, twelve thousand of the tribe of Levi, twelve thousand of the tribe of Is'sachar, twelve thousand of the tribe of Zeb'ulun, twelve thousand of the tribe of Joseph, twelve thousand sealed out of the tribe of Benjamin.
After this I looked, and behold, a great multitude which no man could number, from every nation, from all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands, and crying out with a loud voice, "Salvation belongs to our God who sits upon the throne, and to the Lamb!"
And all the angels stood round the throne and round the elders and the four living creatures, and they fell on their faces before the throne and worshiped God, saying, "Amen! Blessing and glory and wisdom and thanksgiving and honor and power and might be to our God for ever and ever! Amen."
Then one of the elders addressed me, saying, "Who are these, clothed in white robes, and whence have they come?" I said to him, "Sir, you know." And he said to me, "These are they who have come out of the great tribulation; they have washed their robes and made them white in the blood of the Lamb.
Therefore are they before the throne of God, and serve him day and night within his temple; and he who sits upon the throne will shelter them with his presence. They shall hunger no more, neither thirst any more; the sun shall not strike them, nor any scorching heat. For the Lamb in the midst of the throne will be their shepherd, and he will guide them to springs of living water; and God will wipe away every tear from their eyes."