“Here you should be guided by the words of St. Paul, I Corinthians 7 [:4–5], “The husband does not rule over his own body, but the wife does; likewise the wife does not rule over her own body, but the husband does. Do not deprive each other, except by agreement,” etc. Notice that St. Paul forbids either party to deprive the other, for by the marriage vow each submits his body to the other in conjugal duty. When one resists the other and refuses the conjugal duty she is robbing the other of the body she had bestowed upon him. This is really contrary to marriage, and dissolves the marriage. For this reason the civil government must compel the wife, or put her to death. If the government fails to act, the husband must reason that his wife has been stolen away and slain by robbers; he must seek another. We would certainly have to accept it if someone’s life were taken from him. Why then should we not also accept it if a wife steals herself away from her husband, or is stolen away by others?”

The Estate of Marriage, 1522, translated by Walther I. Brandt, from Luther's Works, Vol. 45, pp. 32-34); as quoted in Martin Luther: Execute Adulterers, Witches, Frigid Wives, & Prostitutes, Pagadian Diocese http://www.pagadiandiocese.org/2017/10/30/martin-luther-execute-adulterers-witches-frigid-wives-prostitutes/, October 26, 2017, Dave Armstrong