The theory of the asuras is that the living entities are born of material nature, or prakṛti, in touch with the puruṣa. This theory also cannot be accepted, because both the material nature and the Supreme Personality of Godhead are eternally existing. Neither the material nature nor the Supreme Personality of Godhead can be born. The Supreme Lord is known as aja, or unborn. Similarly, the material nature is called ajā. Both these terms, aja and ajā, mean "unborn." Because both the material nature and the Supreme Lord are unborn, it is not possible that they can beget the living entities. But it is accepted in the Vedic literature that as water in contact with air sometimes presents innumerable bubbles, so a combination of the material nature and the Supreme Person causes the appearance of the living entities within this material world. As bubbles in the water appear in different shapes, the living entities also appear in the material world in different shapes and conditions, influenced by the modes of material nature. Therefore it is not improper to conclude that the living entities appearing within this material world in different shapes, such as human beings, demigods, animals, birds and beasts, all get their respective bodies due to different desires. No one can say when such desires were awakened in them, and therefore it is said, anādi-karma: the cause of such material existence is untraceable. No one knows when material life began, but it is a fact that it does have a point of beginning because originally every living entity is a spiritual spark. As a spark's falling onto the ground from a fire has a beginning, so a living entity's coming to this material world has a beginning, but no one can say when. Even though during the time of dissolution all the conditioned living entities remain merged within the spiritual existence of the Lord, as if in deep sleep, their original desires to lord it over the material nature do not subside. Again, when there is cosmic manifestation, they come out to fulfill the same desires, and therefore they appear in different species of life.
The living entities merged into the Supreme at the time of dissolution are compared to honey. In the honeycomb, the tastes of different flowers are conserved. When one drinks honey, one cannot distinguish what sort of honey has been collected from what sort of flower, but the palatable taste of the honey presupposes that the honey is not homogeneous but is a combination of different tastes. Another example is that although different rivers ultimately mix with the water of the sea, this does not mean that the individual identities of the rivers are thereby lost. Although the water of the Ganges and the water of the Yamunā mix with the water of the sea, the river Ganges and river Yamunā still continue to exist independently. The merging of different living entities into Brahman at the time of dissolution involves the dissolution of different types of bodies, but the living entities, along with their different tastes, remain individually submerged in Brahman until another manifestation of the material world. As the salty taste of seawater and the sweet taste of Ganges water are different and this difference continuously exists, so the difference between the Supreme Lord and the living entities continuously exists, even though at the time of dissolution they appear to merge. The conclusion is, therefore, that even when the living entities become free from all contamination of material conditions and merge into the spiritual kingdom, their individual tastes in relationship with the Supreme Lord continue to exist.
The personified Vedas continued: "Dear Lord, it is therefore our conclusion that all conditioned living entities are attracted by Your material energy and that it is only due to their mistakenly identifying themselves as products of the material nature that they are transmigrating from one kind of body to another in forgetfulness of their eternal relationship with You. Because of ignorance, these living entities misidentify themselves in different species of life, and especially when elevated to the human form of life, they identify with a particular class of men, or a particular nation or race or so-called religion, forgetting their real identity as eternal servants of Your Lordship. Due to this faulty conception of life, they are undergoing repeated birth and death. Out of many millions of them, if one becomes intelligent enough by associating with pure devotees, he comes to the understanding of Kṛṣṇa consciousness and comes out of the jurisdiction of the material misconception."
In the Caitanya-caritāmṛta it is confirmed by Lord Caitanya that the living entities are wandering within this universe in different species of life, but that if one of them becomes intelligent enough by the mercy of the spiritual master and the Supreme Personality of Godhead, Kṛṣṇa, then he begins his devotional life in Kṛṣṇa consciousness. It is said, hariṁ vinā na mṛtiṁ taranti: without the help of the Supreme Personality of Godhead, one cannot get out of the clutches of repeated birth and death. In other words, only the Supreme Lord, the Personality of Godhead, can relieve the conditioned souls from the cycle of repeated birth and death.
The personified Vedas continued: "The influence of time—past, present and future—and the material miseries, such as excessive heat, excessive cold, birth, death, old age and disease, are all simply the movements of Your eyebrows. Everything is working under Your direction." It is said in the Bhagavad-gītā that all material activity is going on under the direction of the Supreme Personality of Godhead, Kṛṣṇa. The Vedas continued: "All the conditions of material existence are opposing elements for persons who are not surrendered unto You. But for those who are surrendered souls and are in full Kṛṣṇa consciousness, these things cannot be a source of fear." When Lord Nṛsiṁha-deva appeared, Prahlāda Mahārāja was never afraid of Him, whereas his atheist father was immediately faced with death personified and was killed. Therefore, although Lord Nṛsiṁha-deva appears as death for an atheist like Hiraṇyakaśipu, He is always kind and is the reservoir of all pleasure for the devotees like Prahlāda. A pure devotee is not, therefore, afraid of birth, death, old age and disease.
Śrīpāda Śrīdhara Svāmī has composed a nice verse in this regard, the meaning of which is as follows: "My dear Lord, I am a living entity perpetually disturbed by the conditions of material existence. I have been cracked to pieces by the smashing wheel of material existence, and because of my various sinful activities while existing in this material world, I am burning in the blazing fire of material reactions. Somehow or other, my dear Lord, I have come to take shelter under Your lotus feet. Please accept me and give me protection." Śrīla Narottama dāsa Ṭhākura, also, prays like this: "My dear Lord, O son of Nanda Mahārāja, associated with the daughter of Vṛṣabhānu, I have come to take shelter under Your lotus feet after suffering greatly in the material condition of life, and I pray that You please be merciful upon me. Please do not kick me away, for I have no other shelter than You."
The conclusion is that any process of self-realization or God realization other than bhakti-yoga, or devotional service, is extremely difficult. Taking shelter of devotional service to the Lord in full Kṛṣṇa consciousness is therefore the only way to become free from the contamination of material, conditioned life, especially in this age. Those who are not in Kṛṣṇa consciousness are simply wasting their time, and they have no tangible proof of spiritual life.