The Four Angels
“13 And the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God,
14 Saying to the sixth angel which had the trumpet, Loose the four angels which are bound in the great river Euphrates.
15 And the four angels were loosed, which were prepared for an hour, and a day, and a month, and a year, for to slay the third part of men.”
(Rev 9:13-15 KJV)
The sounding of the sixth trumpet releases four angels that were prepared to slay one-third of the population. The fact that they are bound shows they are fallen angels. They could be of the angels that Jude spoke of that are bound in chains until the end-time.
“And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day.” (Jud 1:6 KJV)
The river Euphrates was the boundary of the land that God promised to Abraham.
“In the same day the LORD made a covenant with Abram, saying, Unto thy seed have I given this land, from the river of Egypt unto the great river, the river Euphrates:” (Gen 15:18 KJV)
The river Euphrates was seen in the Old Testament as a symbol for war.
“5 The LORD spake also unto me again, saying,
6 Forasmuch as this people refuseth the waters of Shiloah that go softly, and rejoice in Rezin and Remaliah’s son;
7 Now therefore, behold, the Lord bringeth up upon them the waters of the river, strong and many, even the king of Assyria, and all his glory: and he shall come up over all his channels, and go over all his banks:
8 And he shall pass through Judah; he shall overflow and go over, he shall reach even to the neck; and the stretching out of his wings shall fill the breadth of thy land, O Immanuel.”
(Isa 8:5-8 KJV)