Generally in the world people seeking to get close to God seek the help and guidance of other individual, a ?Protector? (or an Aulia) who they see as someone having achieved the closeness that they are seeking. This is true in almost all religions, however in Islam the concept of Aulia  / Protector is fully described in this lecture, as to who the ultimate protector is, and how in the circle of believers Muslims become each others protectors.