Sentence:  He ordered them both to strip to the skin, then addressed them as follows: "That as he perceived that neither of them had any religion before, 'twas proper they should begin to have some, and therefore out of charity to their souls, he had converted them to <WSD>Adamitism</WSD>. 
Meaning of the word marked with <WSD> tags:  Any of a variety of Christian sects or cults that advocated nudity as an expression of human perfection.