Here is the final unidentified movie still from the book. A man dressed as in Biblical times is whipping a naked woman that probably represents his slave. However, the action appears to be occurring on a stage, the woman appears to be wearing a merkin, and the man doesn’t seem to be using the whip seriously. This suggests that it is actually a cabaret act. Since the book was published in 1965, the film must predate this and so it is not from a mainstream American film. It is probably from a European movie (perhaps a “mondo” type film) or from an American “nudie-cutie.”
For unknown reasons, over the years the link to the picture seems to have disappeared. I am providing the link again in case anyone is still interested. (Comment if it doesn’t work.)
Here is a link to the photo (Warning. This still contains explicit nudity.): Man in Ancient Garb Whipping a Naked Slave Girl http://bcotd.com/Sadism_in_the_Movies_stills_identification_project/Sadism%20in%20the%20Movies,%20p433.jpg