There is a variety of dynamics involved with one that is returning to their Jewish Spiritual identity. First of all, one must be able to ascertain that they are in fact Jewish. This is traditionally solidified through the maternal line. Given that there are different circumstances you may need the help of a Rabbi to determine your next step. One that has either been a secular Jew and now wants to embrace their spiritual identity or one that was brought up in another religion and spiritual identity should submit to the proper education i.e. conversion classes. Once the classes are completed, your Rabbi or spiritual council can help determine whether you should convert and/or go through a ceremony of return.
1. If you were raised Jewish and with time distanced yourself from your spiritual identity you may want to consider taking some specific classes to refresh before your reaffirmation.(Ceremony of Return) 2. For the Bnai Anusim and/or Crypto Jew; if you have been reared in another religion and tradition. Returning to your Jewish roots and tradition, it is important you take the same classes that one would take for conversion. Once classes are completed you may want to convert if required or go through a ceremony of return. 3. Conversion classes are 9 months to a year. 4. The Conversion consist of going before a Beit Din followed by a Mikveh. 5. Ceremony of return consist of witnesses and Mikveh 6. A naming ceremony is optional but a very nice touch.