The proper exegetical principle is this: Mosaic law is still to be enforced, by the church or the State or both, unless there is a specific injunction to the contrary in the New Testament.
The Revelation speaks powerfully today, and its message to us is the same as it was to the early Church: that "there is not a square inch of ground in heaven or on earth or under the earth in which there is peace between Christ and Satan.".
