Initiation is a rite of passage ceremony marking entrance or acceptance into a group or society. It could also be a formal admission to adulthood in a community or one of its formal components. In an extended sense it can also signify a transformation in which the initiate is 'reborn' into a new role. Examples of initiation ceremonies might include Christian baptism or confirmation, Jewish bar or bat mitzvah, acceptance into a fraternal organization, secret society or religious order, or graduation from school or recruit training.
A person taking the initiation ceremony in traditional rites, such as those depicted in these pictures, is called an initiate.
In the context of ritual magic and esotericism, an initiation is considered to cause a fundamental process of change to begin within the person being initiated. The person conducting the initiation (the initiator), being in possession of a certain power or state of being, transfers this power or state to the person being initiated. Thus the concept of initiation is similar to that of apostolic succession. The initiation process is often likened to a simultaneous death and rebirth, because as well as being a beginning it also implies an ending as existence on one level drops away in an ascension to the next. Initiation is a key component of Sant Mat, Surat Shabd Yoga and similar religious gnostic traditions. It denotes acceptance by the Guru and also implies that the Chela (student or disciple) agrees to the requirements (such as living an ethical lifestyle, meditating, etc.)
In addition, there can be similar rites of passages associated with parts of naval and military life, which do not constitute true initiations as the participants are already and remain members of the same community. One such rite is associated with crossing the equator on board a naval ship, but it can even be taken by passengers on board a cruise liner, who aren't and don't become members of anything but the so-called 'equator crossing club'. Another form, “Kissing the Royal Belly” or “Royal Baby”, calls for initiates to kneel before a senior member of the crew, who wears a mock diaper. This “Baby” usually has a huge stomach covered with greasy materials ranging from cooking oil to mustard, shaving cream, eggs, and oysters. Junior sailors must lick the Baby’s navel area, while the "baby" grabs and shakes their head to better smear the goo onto their faces.
Initiation may be thought of as an event which may help teens prepare themselves to be good husbands and wives. Where modernization is occurring, initiation is not taken so seriously as before, although there are still certain areas which still perform initiations.
In some African tribes, boys take about 3-4 months participating in initiation rites and girls take about 1-2 months.