There are two separate job titles your character can be if they wish to join the Order of Bast. This depends if you're character is male or female. Females may join the Order as priestess'. They can learn many spells and are given protections and skills needed to defeat the Old Ones. However, they tend not to use physical force, relying mostly on their spells and knowledge.
Males are the warrior class of the Order.
They use heavy firepower and military tactics to blow away the Mythos. Their function is to protect the Sisterhood and wipe out bad guys. These males are called the Sons of Bast or 'Bast's Bastards' as an amusing nickname. Both male and female members are subject to three basic rules of the Order. Three, hunt down and destroy the Old Ones and their plans.