The Book of the Week is The Eleventh Commandment by Lester del Rey, a 1962 paperback original, cover art by Leo and Diane Dillon.
This is from the Regency Books line, which we were discussing three months ago before being interrupted by the death of Thomas M. Disch and by the Hugo Awards. Regency deliberately sought out books with controversial topics and The Eleventh Commandment is no exception, heavy on the sex and religious satire. This was rather different from del Rey's usual fare, space opera and young adult adventures.
In two weeks we will finally get to my favorite Regency Book, but first, next week you will see why Lester del Rey is on the list of science fiction authors who had a remarkably prescient vision of an event decades in the future.