Paradosis or tradition falls into two categories.

The difference can be seen in Acts 15. Besides the issue

of following the Mosaic Law for gentile converts, which

meant primarily circumcision, the Council of Jerusalem

also decreed that converts had "to avoid pollution from idols,

unlawful marriage, the meat of strangled animals, and blood"

(Acts 15:20).

There are clearly distinguished paradosis or traditions which

are considered irrevocable, unchangeable, even to our day,

e.g. circumcision is not a requirement for new Christians. On

the other hand, today we would not be concerned with "pollution

from idols," how an animal is killed for meat, or whether blood

is in our food. These appear to be different traditions from the

former--changeable and not binding in the same way as

non-circumcision.