The four levels of beliefs:

Core:
Beliefs held on this level are accumulated from experiences that an individual has been exposed to from birth till the present day throughout this lifetime.

History:
Beliefs held on this level are gathered from experiences and events that an individual has been exposed to in past lives, encounters from in-between lives and collective global consciousness (A belief in past lives and reincarnation is not needed )

Genetic:
Beliefs held on this level are accumulated from experiences passed down through the DNA of the individuals family and ancestors

Soul:
Beliefs held on this level are gathered from experiences and information that an individual has been exposed to on a much deeper level and have been carried forward from one incarnation to another.