"The function of dharmapalas (protectors) is to help you free yourself from anything that impedes your practice and path. They help to encourage your exertion, encourage your devotion; they help you find ways to purify your obscuration and your wrong-doing. Dharmapalas (protectors) are basically Buddhas who take this type of position or role for the aid of practitioners. So while it is not the case that any eternal being can grant you supreme siddhi, these three roots, the gurus, yidams and dharmapalas, if you supplicate them, can bestow blessing and can help to remove obstacles on your path."