The phrase "another angel" is significant because it tells us that this
is a separate event from chapter 17,
even though the subject, Babylon, is the same.
The announcement concerns the loss of wealth and power of a once
flourishing city - vv. 2,3
Throughout the years there has been discussion of whether this is a
literal or a symbolic city, but there is a sense in which it is both.
A survey of the details involved reveals that it is a reference to both
a literal city and the philosophy which it embodies.
The appeal of v. 4 is both
prophetic and practical
The wording of vv. 5,6 points
out that, for both individuals and nations, there is a "cut-off point" in
iniquity beyond which god will not go.
And the application for believers is that although we "cannot be
condemned with the world" (I Corinthians 11:32)
we may suffer the effects of living in a sin saturated society - see
II Peter 2:7,8