Revelation 7: 9, 14 - 17
9 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,
14 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.
15 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.
16 They shall hunger no more, neither thirst any more; the sun shall not strike them, nor any scorching heat.
17 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."

EWTN