Srila Prabhupada analogies

One who is honest may be faithful to the government, but he does not need to bribe the government servants. Bribery is illegal; one does not bribe a government servant, but that does not mean that one does not show him respect. Similarly, one who engages in the transcendental loving service of the Supreme Lord does not need to worship any demigod, nor does he have any tendency to show disrespect to the demigods.
By worshiping the Supreme Lord, one automatically serves all the demigods because they are parts and parcels of the whole. If one supplies water to the root of a tree, all the parts of the tree, such as the leaves and branches, are automatically satisfied, and if one supplies food to the stomach, all the limbs of the body—the hands, legs, fingers, etc.—are nourished. Thus by worshiping the Supreme Personality of Godhead one can satisfy all the demigods, but by worshiping all the demigods one does not completely worship the Supreme Lord. (SB 4.2.35, purport)

Milk is a very nice food, but when milk is touched by an envious serpent it becomes poisonous. Similarly, material assets such as education, wealth, beauty and good parentage are undoubtedly nice, but when they decorate persons of a malicious nature, then they act adversely. Another example, given by Cäëakya Paëòita, is that a serpent that has a jewel on its head is still fearful because it is a serpent. A serpent, by nature, is envious of other living entities, even though they be faultless. When a serpent bites another creature, it is not necessarily because the other creature is at fault; it is the habit of the serpent to bite innocent creatures. Similarly, although Dakña was qualified by many material assets, because he was proud of his possessions and because he was envious, all those qualities were polluted. It is sometimes, therefore, detrimental for a person advancing in spiritual consciousness, or Kåñëa consciousness, to possess such material assets. Kuntédevé, while offering prayers to Kåñëa, addressed Him as akiïcana-gocara, one who is easily approached by those who are bereft of all material acquisitions. Material exhaustion is an advantage for advancement in Kåñëa consciousness, although if one is conscious of his eternal relationship with the Supreme Personality of Godhead, one can utilize one's material assets, such as great learning and beauty and exalted ancestry, for the service of the Lord; then such assets become glorious. In other words, unless one is Kåñëa conscious, all his material possessions are zero, but when this zero is by the side of the Supreme One, it at once increases in value to ten. Unless situated by the side of the Supreme One, zero is always zero; one may add one hundred zeros, but the value will still remain zero. Unless one's material assets are used in Kåñëa consciousness, they may play havoc and degrade the possessor. (SB 4.3.17, purport)

For example, when iron is put into a fire, it becomes warm, and when red-hot, although it is iron, it acts like fire. Similarly, when copper is surcharged with electricity, its action as copper stops; it acts as electricity. Bhagavad-gétä (14.26) also confirms that anyone who engages in unadulterated devotional service to the Lord is at once elevated to the position of pure Brahman. (SB 4.3.23, purport)