Throughout Srimad-Bhagavatam there are descriptions of ten subject matters, including creation, subsequent creation and the planetary systems. Sukadeva Gosvami, the speaker of Srimad-Bhagavatam, has already described creation, subsequent creation and the planetary systems in the Third, Fourth and Fifth Cantos. Now, in this Sixth Canto, which consists of nineteen chapters, he will describe posana, or protection by the Lord.

The first chapter relates the history of Ajamila, who was considered a greatly sinful man, but was liberated when four order carriers of Visnu came to rescue him from the hands of the order carriers of Yamaraja. A full description of how he was liberated, having been relieved of the reactions of his sinful life, is given in this chapter. Sinful activities are painful both in this life and in the next. We should know for certain that the cause of all painful life is sinful action. On the path of fruitive work one certainly commits sinful activities, and therefore according to the considerations of karma-kanda, different types of atonement are recommended. Such methods of atonement, however, do not free one from ignorance, which is the root of sinful life. Consequently one is prone to commit sinful activities even after atonement, which is therefore very inadequate for purification. On the path of speculative knowledge one becomes free from sinful life by understanding things as they are. Therefore the acquirement of speculative knowledge is also considered a method of atonement. While performing fruitive activities one can become free from the actions of sinful life through austerity, penance, celibacy, control of the mind and senses, truthfulness and the practice of mystic yoga. By awakening knowledge one may also neutralize sinful reactions. Neither of these methods, however, can free one from the tendency to commit sinful activities.

By bhakti-yoga one can completely avoid the tendency for sinful life; other methods are not very feasible. Therefore the Vedic literature concludes that devotional service is more important than the methods of karma-kanda and jnana-kanda. Only the path of devotional service is auspicious for everyone. Fruitive activities and speculative knowledge cannot independently liberate anyone, but devotional service, independent of karma and jnana, is so potent that one who has fixed his mind at the lotus feet of Krsna is guaranteed not to meet the Yamadutas, the order carriers of Yamaraja, even in dreams.

To prove the strength of devotional service, Sukadeva Gosvami described the history of Ajamila. Ajamila was a resident of Kanyakubja (the modern Kanauj). He was trained by his parents to become a perfect brahmana by studying the Vedas and following the regulative principles, but because of his past, this youthful brahmana was somehow attracted by a prostitute, and because of her association he became most fallen and abandoned all regulative principles. Ajamila begot in the womb of the prostitute ten sons, the last of whom was called Narayana. At the time of Ajamilas death, when the order carriers of Yamaraja came to take him, he loudly called the name Narayana in fear because he was attached to his youngest son. Thus he remembered the original Narayana, Lord Visnu. Although he did not chant the holy name of Narayana completely offenselessly, it acted nevertheless. As soon as he chanted the holy name of Narayana, the order carriers of Lord Visnu immediately appeared on the scene. A discussion ensued between the order carriers of Lord Visnu and those of Yamaraja, and by hearing that discussion Ajamila was liberated. He could then understand the bad effect of fruitive activities and could also understand how exalted is the process of devotional service.