By allowing one sin, we disarm and deprive ourselves of having a conscientious argument to defend ourselves against any other sin. He that can go against his conscience in one, cannot plead conscience against any other, for if the authority of God awes him from one, it will from all. “How can I do this, and sin against God?” said Joseph. I doubt not but his answer would have been the same if his mistress had bid him to lie for her, as now when she enticed him to lie with her. The ninth commandment would have bound him as well as the seventh.