Babylon was an ancient city built on the Euphrates river in what is now southern Iraq. It once was the capital of a great empire which at one point conquered the land of Judah as mentioned in the second book of Kings and in Daniel. But the river changed its course and the city was abandoned long ago. Both the historic city in Mesopotamia and the parable city with its tower, mentioned in Genesis, represent the same thing, a worship that appears holy in externals, while the internals are profane. This representation expands to mean a church whose leaders use this kind of worship to gain dominion over others for their own gain and for the gain and power of the church. The city itself is the doctrinal structure that supports this kind of worship and dominion.

(References: Apocalypse Explained 1029; Arcana Coelestia 1283, 1302, 1304, 1310, 1311)

In the Word three terms are used to refer to bad actions: transgression, iniquity, and sin. Transgression is the least bad. It means a violation of what is true in an external context, a violation of what is right and orderly. Iniquity is next and denotes acts that violate more interior truths. Sin is the worst. It is a violation of what is holy and righteous, a violation against the Lord. Sin is the deepest kind of evil. Regarding iniquity -- to be in charity, or live a life of charity is to live a life where the acts and thoughts that have top priority are those that have within them a love for the neighbor. Sometimes our love of self, our inborn desire to put ourselves first, is stronger than our charity and we do something for ourselves at the expense of our neighbor, or even do harm to our neighbor. Such an act, if our motive is selfish, is an iniquity.

(References: Arcana Coelestia 9156, 9965 [2-3])