Kaśyapa: One of the prajāpatis, the son of Marīci and one of the sons-in-law of Prajāpati Dakṣa. He is the father of the gigantic bird Garuḍa, who was given elephants and tortoises as eatables. He married thirteen daughters of Prajāpati Dakṣa, and their names are Aditi, Diti, Danu, Kāṣṭhā, Ariṣṭā, Surasā, Ilā, Muni, Krodhavaśā, Tāmrā, Surabhi, Saramā and Timi. He begot many children, both demigods and demons, by those wives. From his first wife, Aditi, all the twelve Ādityas were born; one of them is Vāmana, the incarnation of Godhead. This great sage, Kaśyapa, was also present at the time of Arjuna's birth. He received a presentation of the whole world from Paraśurāma, and later on he asked Paraśurāma to go out of the world. His other name isAriṣṭanemi. He lives on the northern side of the universe.
(Srimad Bhagavatam------1:9:8------purport).

Vasudeva: Son of King Śūrasena, husband of Devakī and father of Lord Śrī Kṛṣṇa. He is the brother of Kuntī and father of Subhadrā. Subhadrā was married with her cousin Arjuna, and this system is still prevalent in some parts of India. Vasudeva was appointed minister of Ugrasena, and later on he married eight daughters of Ugrasena's brother Devaka. Devakī is only one of them. Kaṁsa was his brother-in-law, and Vasudeva accepted voluntary imprisonment by Kaṁsa on mutual agreement to deliver the eighth son of Devakī. This was foiled by the will of Kṛṣṇa. As maternal uncle of the Pāṇḍavas, he took active parts in the purificatory process of the Pāṇḍavas. He sent for the priest Kaśyapa at the Śatasṛṅga Parvata, and he executed the functions. When Kṛṣṇa appeared within the bars of Kaṁsa's prison house, He was transferred by Vasudeva to the house of Nanda Mahārāja, the foster father of Kṛṣṇa, at Gokula. Kṛṣṇa disappeared along with Baladeva prior to the disappearance of Vasudeva, and Arjuna (Vasudeva's nephew) undertook the charge of the funeral ceremony after Vasudeva's disappearance.
(Srimad Bhagavatam------1:11:16-17------purport).

Pāṇḍava Arjuna: The great hero of the Bhagavad-gītā. He is the kṣatriya son of Mahārāja Pāṇḍu. Queen Kuntīdevī could call for any one of the demigods, and thus she called Indra, and Arjuna was born by him. Arjuna is therefore a plenary part of the heavenly King Indra. He was born in the month of Phalguna (February-March), and therefore he is also called Phalguni. When he appeared as the son of Kuntī, his future greatness was proclaimed by air messages, and all the important personalities from different parts of the universe, such as the demigods, the Gandharvas, the Ādityas (from the sun globe), the Rudras, the Vasus, the Nāgas, the different ṛṣis (sages) of importance, and the Apsarās (the society girls of heaven), all attended the ceremony. The Apsarās pleased everyone by their heavenly dances and songs. Vasudeva, the father of Lord Kṛṣṇa and the maternal uncle of Arjuna, sent his priest representative Kaśyapa to purify Arjuna by all the prescribed saṁskāras, or reformatory processes. His saṁskāra of being given a name was performed in the presence of the ṛṣis, residents of Śatasṛṅga. He married four wives, Draupadī, Subhadrā, Citrāṅgadā and Ulūpī, from whom he got four sons of the names Śrutakīrti, Abhimanyu, Babhruvāhana and Irāvān respectively.
(Srimad Bhagavatam------1:12:21------purport).

Lord Śiva is not an ordinary living entity, nor is he in the category of Viṣṇu, or the Supreme Personality of Godhead. He is far more powerful than any living entity up to the standard of Brahmā, yet he is not on an equal level with Viṣṇu. Since he is almost like Lord Viṣṇu, Śiva can see past, present and future. One of his eyes is like the sun, another is like the moon, and his third eye, which is between his eyebrows, is like fire. He can generate fire from his middle eye, and he is able to vanquish any powerful living entity, including Brahmā, yet he does not live pompously in a nice house, etc., nor does he possess any material properties, although he is master of the material world. He lives mostly in the crematorium, where dead bodies are burnt, and the whirlwind dust of the crematorium is his bodily dress. He is unstained by material contamination. Kaśyapa took him as his younger brother because the youngest sister of Diti (Kaśyapa's wife) was married to Lord Śiva. The husband of one's sister is considered one's brother. By that social relationship, Lord Śiva happened to be the younger brother of Kaśyapa. Kaśyapa warned his wife that because Lord Śiva would see their sex indulgence, the time was not appropriate. Diti might argue that they would enjoy sex life in a private place, but Kaśyapa reminded her that Lord Śiva has three eyes, called the sun, moon and fire, and one cannot escape his vigilance any more than one can escape Viṣṇu. Although seen by the police, a criminal is sometimes not immediately punished; the police wait for the proper time to apprehend him. The forbidden time for sexual intercourse would be noted by Lord Śiva, and Diti would meet with proper punishment by giving birth to a child of ghostly character or a godless impersonalist. Kaśyapa foresaw this, and thus he warned his wife Diti.
(Srimad Bhagavatam------3:14:25------purport).

Kaśyapa informed his wife that just because Lord Śiva happened to be his brother-in-law, that should not encourage her in her offense towards him. Kaśyapawarned her that actually Lord Śiva is not connected with anyone, nor is anyone his enemy. Since he is one of the three controllers of the universal affairs, he is equal to everyone. His greatness is incomparable because he is a great devotee of the Supreme Personality of Godhead. It is said that among all the devotees of the Personality of Godhead, Lord Śiva is the greatest. Thus the remnants of foodstuff left by him are accepted by other devotees as mahā-prasāda, or great spiritual foodstuff. The remnants of foodstuff offered to Lord Kṛṣṇa are called prasāda, but when the same prasāda is eaten by a great devotee like Lord Śiva, it is called mahā-prasāda. Lord Śiva is so great that he does not care for the material prosperity for which every one of us is so eager. Pārvatī, who is the powerful material nature personified, is under his full control as his wife, yet he does not use her even to build a residential house. He prefers to remain without shelter, and his great wife also agrees to live with him humbly. People in general worship goddess Durgā, the wife of Lord Śiva, for material prosperity, but Lord Śiva engages her in his service without material desire. He simply advises his great wife that of all kinds of worship, the worship of Viṣṇu is the highest, and greater than that is the worship of a great devotee or anything in relation with Viṣṇu.
(Srimad Bhagavatam------3:14:26------purport).

It appears from the talks of Kaśyapa with his wife that he was a worshiper of Lord Śiva, and although he knew that Lord Śiva would not be pleased with him for such a forbidden act, he was obliged to act by his wife's desire, and thus he offered his obeisances unto fate. He knew that the child born of such untimely sexual intercourse would certainly not be a good child, but could not protect himself because he was too obligated to his wife. In a similar case, however, when Ṭhākura Haridāsa was tempted by a public prostitute at the dead of night, he avoided the allurement because of his perfection in Kṛṣṇa consciousness. That is the difference between a Kṛṣṇa conscious person and others. Kaśyapa Muni was greatly learned and enlightened, and he knew all the rules and regulations of systematic life, yet he failed to protect himself from the attack of sex desire. Ṭhākura Haridāsa was not born of a brāhmaṇa family, nor was he himself brāhmaṇa, yet he could protect himself from such an attack due to his being Kṛṣṇa conscious. Ṭhākura Haridāsa used to chant the holy name of the Lord three hundred thousand times daily.
(Srimad Bhagavatam------3:14:31------purport).

After describing the dynasty of the Ādityas and the other demigods, Śukadeva Gosvāmī describes Diti's sons known as the Maruts and how they were elevated to the position of demigods. Just to help Indra, Lord Viṣṇu had killed Hiraṇyākṣa and Hiraṇyakaśipu. Because of this, Diti was very envious, and she was eager to have a son who could kill Indra. By her service, she enchanted Kaśyapa Muni in order to beg from him a greater son to do this. In corroboration of the Vedic injunction vidvāṁsam api karṣati, Kaśyapa Muni was attracted to his beautiful wife and promised to grant her any request. When, however, she requested a son who would kill Indra, he condemned himself, and he advised his wife Diti to follow the Vaiṣṇava ritualistic ceremonies to purify herself. When Diti, following the instructions of Kaśyapa, engaged in devotional service, Indra could understand her purpose, and he began observing all her activities. One day, Indra had the opportunity to see her deviating from devotional service. Thus he entered her womb and cut her son into forty-nine parts. In this way the forty-nine kinds of air known as the Maruts appeared, but because Diti had performed the Vaiṣṇava ritualistic ceremonies, all the sons became Vaiṣṇavas.
(Srimad Bhagavatam------6:18------summary).

This chapter explains how Diti, Kaśyapa Muni's wife, executed Kaśyapa Muni's instructions on devotional service. During the first day of the bright fortnight of the moon in the month of Agrahāyaṇa (November-December), every woman, following in the footsteps of Diti and following the instructions of her own husband, should begin this puṁsavana-vrata. In the morning, after washing her teeth, bathing and thus becoming purified, she should hear about the birth mystery of the Maruts. Then, covering her body with a white dress and being properly ornamented, before breakfast she should worship Lord Viṣṇu and mother Lakṣmī, the goddess of fortune, Lord Viṣṇu's wife, by glorifying Lord Viṣṇu for His mercy, patience, prowess, ability, greatness and other glories and for how He can bestow all mystic benedictions. While offering the Lord all paraphernalia for worship, such as ornaments, a sacred thread, scents, nice flowers, incense and water for bathing and washing His feet, hands and mouth, one should invite the Lord with this mantra: oṁ namo bhagavate mahā-puruṣāya mahānubhāvāya mahāvibhūtipataye saha mahā-vibhūtibhir balim upaharāmi. Then one should offer twelve oblations in the fire while chanting this mantra: oṁ namo bhagavate mahā-puruṣāya mahāvibhūti-pataye svāhā. One should offer obeisances while chanting this mantra ten times. Then one should chant the Lakṣmī-Nārāyaṇa mantra.
(Srimad Bhagavatam------6:19------summary).

As described in this chapter, because Aditi, the mother of the demigods, was very afflicted, her husband, Kaśyapa Muni, told her how to observe vows in austerities for the benefit of her sons.
Since the demigods were not visible in the heavenly kingdom, their mother, Aditi, because of separation from them, was very much aggrieved. One day after many, many years, the great sage Kaśyapa emerged from a trance of meditation and returned to his āśrama. He saw that the āśrama was no longer beautiful and that his wife was very morose. Everywhere in the āśrama, he saw signs of lamentation. The great sage therefore inquired from his wife about the well-being of the āśrama and asked her why she looked so morose. After Aditi informedKaśyapa Muni about the āśrama's well-being, she told him that she was lamenting for the absence of her sons. She then requested him to tell her how her sons could return and reoccupy their positions. She wanted all good fortune for her sons. Moved by Aditi's request, Kaśyapa Muni instructed her in the philosophy of self-realization, the difference between matter and spirit, and how to be unaffected by material loss. But when he saw that Aditi was not satisfied even after he had given these instructions, he advised her to worship Vāsudeva, Janārdana. He assured her that only Lord Vāsudeva could satisfy her and fulfill all her desires. When Aditi then expressed her desire to worship Lord Vāsudeva, Prajāpati Kaśyapa told her about a process of worship known as payo-vrata, which is executed in twelve days. Lord Brahmā had instructed him how to satisfy Lord Kṛṣṇa by this process, and thus he advised his wife to observe this vow and its regulative principles.
(Srimad Bhagavatam------8:16------summary).