Revelation 15:1

I saw....seven Angels, having the seven last plagues. Many by these understand chastisements that will fall upon the wicked a little before the end of the world, and so take these plagues and vials that are poured out, in the next chapter, mostly in a literal sense. Others apply them to different calamities that happened to heathen Rome; but the applications are so different, that they serve to convince us how uncertain they are. In the mean time St. John seems to repeat the same things in a different manner, and some times by way of anticipation, as here the saints are introduced rejoicing, in view of that happiness in heaven which is prepared for them. (Witham) --- Here is a new vision, great and wonderful, seven Angels holding the figurative symbols of seven plagues. They are called the last, because in them is completed the wrath of God, being inflicted on mankind in the last period of the world, the period of Christianity. The first of these scourges takes place shortly after the commencement of the Christian era, and the seventh puts an end to the world. (Pastorini)