So everything is lighter as soon as it is spiritually advanced or there is spirit. Similarly when we'll be spiritually advanced, then there will be no impediment. Now we cannot fly in the air, but when you are free from this body, your spirit soul, within a second you can go to the Vaikuṇṭhaloka. It is so light. Within a second. Tyaktvā dehaṁ punar janma naiti mām eti (BG 4.9).
So the conclusion is when the world becomes overloaded with the demons, nondevotees, it becomes disturbed, becomes... The mother earth feels load, very much load. So at that time, Kṛṣṇa comes. Therefore it is said: bhāra-avatāraṇāya, just to unload. And bhārāvatāraṇāyānye. Somebody says: bhuvo nāva ivodadhau. Just like if a ship or boat is overloaded, it is very dangerous. It can be drowned at any moment. So sīdantyā bhūri-bhāreṇa.
So mother earth was overloaded and she approached Brahmā on account of overloading of these demons. She was feeling too much uncomfortable. And Brahmā is the chief living being within this universe. So when there is need, others approaches Brahmā, and Brahmā approaches Viṣṇu to reduce the overburden. Then He takes His incarnation, and that is stated in the Bhagavad-gītā: yadā yadā hi dharmasya glānir bhavati bhārata, abhyutthānam adharmasya (BG 4.7). Abhyutthānam adharmasya. "When the principles of religiosity becomes increased, at that time, I appear," Kṛṣṇa says.
Just like take for example, when there are too much criminals in the state, unlawful, lawlessness, the state becomes overburdened, disturbed, overburdened. At that time the administrators are puzzled what to do. Similarly when the world is overburdened by atheists, demons, nonbelievers, the world becomes overburdened. Otherwise things will go on nicely. Just like in the state, if people abide by the laws nicely, then it is very easy to administer. Things are going on very nicely. But if people become criminals, it becomes a overburden to the state administrators.
So such thing happens because this is material world. And the demons and the demigods, they are always there, existing. But when the demonic power becomes increased, then the world becomes overburdened. Sīdantyā bhūri-bhāreṇa jāto hy ātma-bhuvārthitaḥ (SB 1.8.34), ātma-bhū. Ātmabhū is Brahmā's name. He's directly born of the Supreme Soul, Viṣṇu. He's not born as usually we do from the womb of mother. So Brahmā was born from the navel of Garbhodakaśāyī Viṣṇu. Therefore his another name is Ātmabhū. Svayambhū, Svayambhū. These are different names of Brahmā. Svayambhūr nāradaḥ śambhuḥ (SB 6.3.20). These are the... Brahmā is one, one of the authorities. He's also mentioned in the list of authorities, dvādaśa-mahājana. Twelve authorities.
- svayambhūr nāradaḥ śambhuḥ
- kumāraḥ kapilo manuḥ
- prahlādo janako bhīṣmo
- balir vaiyāsakir vayam
- (SB 6.3.20)
We have to follow the mahājana, great authorities.