The orientation ritual in most families happens when a man becomes an associate, and then, a soldier. As described by Tommaso Buscetta to judge Giovanni Falcone, the neophyte is brought together with at least three "men of honor" of the family and the oldest member present warns him that "this House" is meant to protect the weak against the abuse of the powerful; he then pricks the finger of the initiate and spills his blood onto a sacred image, usually of a saint. The image is placed in the hand of the initiate and lit on fire. The neophyte must withstand the pain of the burning, passing the image from hand to hand, until the image has been consumed, while swearing to keep faith with the principles of "Cosa Nostra," solemnly swearing "may my flesh burn like this saint if I fail to keep my oath." Joseph Valachi was the first person to mention that in court.

The Sicilians also have a law of silence, called omertà; it forbids the common man, woman or child to cooperate at all with the police or the government, upon pain of death.

Ten Commandments

In November 2007 Sicilian police reported to have found a list of "Ten Commandments" in the hideout of mafia boss Salvatore Lo Piccolo. Similar to the Biblical Ten Commandments, they are thought to be a guideline on how to be a good mobster. The commandments are as follows:

1. No-one can present himself directly to another of our friends. There must be a third person to do it.
2. Never look at the wives of friends
3. Never be seen with cops.
4. Don't go to pubs and clubs.
5. Always being available for Cosa Nostra is a duty - even if your wife's about to give birth.
6. Appointments must absolutely be respected.
7. Wives must be treated with respect.
8. When asked for any information, the answer must be the truth.
9. Money cannot be appropriated if it belongs to others or to other families.
10. People who can't be part of Cosa Nostra: anyone who has a close relative in the police, anyone with a two-timing relative in the family, anyone who behaves badly and doesn't hold to moral values.