The Lord has many potencies, and He is nondifferent from all these potencies. Because the potencies and the potent cannot be separated, they are identical. Krsna is described as the source of all potencies, and He is also identified with the external potency, the material energy. Krsna also has internal potencies, or spiritual potencies, which are always engaged in His personal service. His internal potency is different from His external potency. Krsna's internal potency and Krsna Himself, who is the potent, are always identical.