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.
Vanity
'Vanity' signifies evil and the falsity of evil. 'Vanities of strangers' signify falsities of religion.
In Exodus 5:9, vain words signify truths when said by people who believe falsities. (Arcana Coelestia 7122)
(参照: Apocalypse Explained 340)