The demigods' powers are like those of a king's officers. The demigods have no independent powers because they are jīvas, minute living entities. An officer of the king can bestow some favors because of the powers invested in him by the king. Similarly, a demigod can shower benefits upon his worshipper because the Supreme Lord has given the demigod some power. If the desire-filled demigod-worshipper becomes a little enlightened about the fact that the demigod he worships is fulfilling his desires by the grace of Lord Kṛṣṇa, then with clear intelligence he will begin worshiping Lord Kṛṣṇa directly.
Different demigods have different powers. The sun-god has the power to cure diseases; the moon-god imbues plants with taste and nutritional or medicinal potency; Goddess Durgā gives strength and courage; Goddess Sarasvatī bestows learning; Goddess Lakṣmī grants wealth; Goddess Cāṇḍī offers one the opportunity to consume meat and intoxicants, and Gaṇeśa gives success in one's endeavors. But all these powers are invested in the demigods by the Supreme Lord, and thus only He, the complete whole, can bestow every kind of benediction. There is an immeasurable difference between a well and the ocean.
We have already touched on the point that everything in the world has been produced by the interaction of the Lord's kṣetra-śakti (His inferior energy, comprising the "field of action") and His kṣetrajña-śakti (His superior energy, which is "the knower of the field"). Therefore everything in this world is merely a transformation of Lord Kṛṣṇa's energies. In one sense the energy principle and the energetic principle are nondifferent, just as fire and its burning potency are inseparable and non-different. Unfortunately, the impersonalists, the monistic philosophers, have wreaked havoc in the world with their misguided opinions concerning transformation of the Lord's energy.
Demigods and all other living entities belong to the energy principle, as does the universe itself. No one but the Lord and His plenary expansions are in the category of the energetic principle. Thus the energy and the energetic are one and different. A person who cannot grasp this subtle principle of simultaneous, inconceivable oneness and difference of the Lord and His energies will surely degenerate into an impersonalist, or Māyāvādī. He will be forced from the path of devotion and become silent. The Supreme Lord, the source of all opulence, is the energetic principle. If we consider Him to be impersonal, then we limit His absoluteness. The words "Supreme Absolute" are applicable to Lord Kṛṣṇa alone. The Lord is the Supreme Absolute Principle, unequalled and unsurpassed. Thus the Vedas say He is "one without a second." The Lord's energies are manifested in various forms, and those who become bewildered by these variegated manifestations end up becoming polytheists. It should be clear to all that whatever variegatedness we see in the universe is but a transformation of the Supreme Lord's diverse energies.