"After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands.... Therefore are they before the throne of God, and serve Him day and night in His temple." Rev. 7:9-15. They "serve" in the temple of the Lord, the prophet says; while the poet sings: "Whence came the armies of the sky, John saw in vision bright? Whence came their crowns, their robes, their palms, Too pure for mortal sight? "From desert waste, and cities full, From dungeons dark, they've come, And now they claim their mansion fair, They've found their long-sought home." One service in which the saved have part during the thousand years is the work of judgment that still remains, preparatory to the final visitation of sin and the destruction of Satan and all his works. The prophet saw this work going forward in the heavenly courts, the redeemed associated with Christ in the service: "I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshiped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years." Rev. 20:4. It was to this work of judging the wicked and the evil angels, that the apostle Paul referred in the counsel to the Corinthians: "Do ye not know that the saints shall judge the world?... Know ye not that we shall judge angels?" 1 Cor. 6:2, 3. On Earth While in heaven above the saved are with Christ and the holy angels before the throne, and follow the Lamb whithersoever He goeth, it is to be remembered that on earth all is desolation and emptiness. The wicked have been slain by the glory of Christ's coming. By the quaking of the earth the cities of the nations have fallen in ruin, islands have been removed, and mountains cast into the depths of the sea. The condition of the earth during this time of desolation is thus described by the prophet: "I beheld the earth, and, lo, it was without form, and void; and the heavens, and they had no light. I beheld the mountains, and, lo, they trembled, and all the hills moved lightly. I beheld, and, lo, there was no man, and all the birds of the heavens were fled. I beheld, and, lo, the fruitful place was a wilderness, and all the cities thereof were broken down at the presence of the Lord, and by His fierce anger." Jer. 4:23-26.