Lutherans Informed about Lodges (LIL)
From the Master Mason’s Ceremony:
“I do promise and swear that I will not have illicit carnal intercourse with a Master Mason’s wife, widow, mother, sister or daughter, nor suffer it to be done by another if in my power to prevent.”
In contrast, the Christian strives to obey the Commandment, "You shall not commit adultery." The Mason limits this commandment to only apply to females who are related in some way to a fellow Master Mason.