These cults were based on the transmission of virtues and their initiates special powers through secret rites. In addition to its ritual acts, an initiation ceremony that allowed access to the "cult" and only initiates could know the mysteries or secrets contained was performed. This was what gave name to these religious variants are called "mystery cults" or "mysteries". As often happens when prohibitions are made, the mysteries were surrounded by a halo of occultism that was highly attractive and in later times would help the expansion of Eastern religion called Christianity which in fact was initially considered another mystery
These cults were based on the transmission of virtues and their initiates special powers through secret rites. In addition to its ritual acts, an initiation ceremony that allowed access to the "cult" and only initiates could know the mysteries or secrets contained was performed. This was what gave name to these religious variants are called "mystery cults" or "mysteries". As often happens when prohibitions are made, the mysteries were surrounded by a halo of occultism that was highly attractive and in later times would help the expansion of Eastern religion called Christianity which in fact was initially considered another mystery