Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(Rev 15:1-4) A song of praise is sung by the church.
(Rev 15:5-8) Seven angels with the seven plagues; and to them one of the living creatures gives seven golden vials full of the wrath of God.
Seven angels appeared in heaven; prepared to finish the destruction of antichrist. As the measure of Babylon's sins was filled up, it finds the full measure of Divine wrath. While believers stand in this world, in times of trouble, as upon a sea of glass mingled with fire, they may look forward to their final deliverance, while new mercies call forth new hymns of praise. The more we know of God's wonderful works, the more we shall praise his greatness as the Lord God Almighty, the Creator and Ruler of all worlds; but his title of Emmanuel, the King of saints, will make him dear to us. Who that considers the power of God's wrath, the value of his favour, or the glory of his holiness, would refuse to fear and honour him alone? His praise is above heaven and earth.
In the judgments God executes upon antichrist and his followers, he fulfils the prophecies and promises of his word. These angels are prepared for their work, clothed with pure and white linen, their breasts girded with golden girdles, representing the holiness, and righteousness, and excellence of these dealings with men. They are ministers of Divine justice, and do every thing in a pure and holy manner. They were armed with the wrath of God against his enemies. Even the meanest creature, when armed with the anger of God, will be too hard for any man in the world. The angels received the vials from one of the four living creatures, one of the ministers of the true church, as in answer to the prayers of the ministers and people of God. Antichrist could not be destroyed without a great shock to all the world, and even the people of God would be in trouble and confusion while the great work was doing. The greatest deliverances of the church are brought about by awful and astonishing steps of Providence; and the happy state of the true church will not begin till obstinate enemies shall be destroyed, and lukewarm or formal Christians are purified. Then, whatever is against Scripture being purged away, the whole church shall be spiritual, and the whole being brought to purity, unity, and spirituality, shall be firmly established.