Pour out
'Pouring out the vials upon the earth, which contained the plagues,' in Revelation 16:1, signifies influx of the reformed into the church, or into people who study and receive the doctrine of justification by faith alone.
(References: Apocalypse Explained 16; Apocalypse Revealed 676)
Isaiah 31:7-8
7
For in that day everyone shall cast away his idols of silver and his idols of gold--sin which your own hands have made for you.
8
"The Assyrian will fall by the sword, not of man; and the sword, not of mankind, shall devour him. He will flee from the sword, and his young men will become subject to forced labor.