Rev 16:4 | MHM | STEP | v. 4 : The third angel pours out his vial on the rivers and springs of water, and they become blood. This may represent those who spread false teachings and cause much harm, like the Jesuits and other emissaries. The result is just punishment for those who have caused the blood of saints and martyrs to be shed (Revelation 16:4 ).

‏ Revelation of John 16:4

v. 4: The third angel pours out his vial on the rivers and springs of water, and they become blood. This may represent those who spread false teachings and cause much harm, like the Jesuits and other emissaries. The result is just punishment for those who have caused the blood of saints and martyrs to be shed (Revelation 16:4 ^a).