Cain went out from the presence of the Lord and built a city. Cities have become focal points for anti-Christian movements. Babylon represents all of them, as it was the nation that destroyed the temple and took the Jews out of their land. In Revelation, Jesus depicts this spirit as a great prostitute offering satisfaction in the things of the world. She is Satan's counterpart to New Jerusalem. We all choose which city we will be citizens of, determining our future.