1. The Tribulation saints in heaven. 15:1-4 V.1 a) Seven angels - I. Another prophetic sign like chapter 12:1, 3. II. Angels with plagues steps forth. III. Anger of God will be completed by the 7 angels, who have 7 bowls of judgments. V.2 b) Sea of glass - I. Notes concerning the sea of glass see 4:6. II. Now the sea of glass is mingled with fire because the wrath of God is being poured out in full measure. III. Persecution and Position - The tribulation saints 7:9-17 stands on the sea of glass, they stand because of their victory. IV. Praise - They play harps like the 144.000 thousand Jews. 14:1-2 V.3-4 c) Singing the song of Moses and the lamb - I. They sing the song of Moses and the Lamb. Ex.15:1-18 II. The song of Moses was a song of praise for His redemption. III. The song of the Lamb is perhaps also a song of praise for His redemption through the cross. IV. After the Egyptian army died in the red sea, the Israelites sang the song of Moses as they beheld the judgment of God on the Egyptians. Ex.14:29-15:18 V. After the great tribulation saints have been brought victoriously home, they watch the judgment of God on their persecutors and they begin to sing the song of Moses and the Lamb. VI. The song of the tribulation saints is a praise of His: A. Marvellous works. 1. His works are enclosed by the words Great and Almighty. 2. His works are Great and Almighty because He is Lord and God. B. Just and true ways. His ways are Just and True because: 1. He is the King of kings. 19:16 2. He has proven to be Just and True to a holy people. C. Alone are holy. His perfect holiness is manifested through a people who experience it and therefore they fear and glorify Him. D. Worship before You. He will receive worship of all nations because of His Just and True judgments. Psalms 86:9; Jer.10:7