In order to start, it will be necessary to go back in time to remote epochs, maybe the most difficult days of all ages of the human history. In those days our planet earth was very overwhelmed by a great amount of demons that ruled the world. Those demons were located in the key posts and controlled the human society, causing great suffering. Facing this situation, Bhummy, the predominating deity of the planet, was desperate and saw herself obliged to approach Lord Brahma. Taking the form of a cow, with tears in her eyes and desperate without knowing what to do or how to act, began to describe Lord Brahma the terrible and desperate situation in which the planet was found...
After very attentively hearing about the sufferings of Planet Earth, the heart of Lord Brahma became very sad. Followed by Bhummi, Lord Siva and all the other Gods, Lord Brahma came to the edge of the great ocean of milk, inside which Lord Vishnu was lying... there, all the demigods together, started to worship Lord Vishnu, master of all the creatures, God of Gods, with the sacred Vedic mantras of the puruṣa—sūkta prayer... which is very dear to Lord Viṣṇu. Lord Brahma prayed with great attention and caution, knowing very well that the devotion in the heart of the devotee, tremendously satisfies The Lord...
Then the meditation was produced in Lord Brahma, and it could capture the vibration of the Lord Viṣṇu's words in the ether, coming to him...
Immediately Brahma went to the demigods and ordered them to quickly comply with the order of The Lord, and explained to them at the same time that long before they had implored Lord Vishnu about the suffering of Planet Earth, He was already conscious of them. The Divine message received by Brahma was... "Very soon The Supreme Lord will descend to the Planet Earth with his potencies and the gods will have to be born , as sons and grandsons, in the Yadu dynasty with the objective of assisting Lord Kṛṣṇa, who will appear as the son of Vasudeva. Similarly, the wives of the demigods also have to take birth with the objective of pleasing him". He also informed the demigods through Brahma that the plenary expansion of Lord Kṛṣṇa, known as Ananta will be born as Baladeva, his older brother with the objective of pleasing him in his transcendental pastimes, and that Viṣṇu—māyā, the external potency of The Lord that captivates the entire world will appear with the aim of carry out The Supreme Lords work...
Then Brahma proceeded to wisely advise the different Devas and appease Mother Earth, and then returned to his abode, called Brahmaloka.
In ancient times lived a king, who belonged to the Yadu dynasty, whose name was Śurasena, who ruled over the areas of Mathurā and Śurasena. The monarch resided in Mathurā. In those days the city of Mathurā was the capital of all the Yadava kings, because Lord Kṛṣṇa eternally resides there. Once, the son of Śurasena named Vasudeva, was getting ready to return home on his chariot accompanied by his wife Devakī, in the day of his marriage. The sun of king Ugrasena and the brother of Devakī, Kaṁsa, took the reins occupying the place of the driver, with the objective of pleasing his sister in her marriage date. They were surrounded by hundreds of golden chariots. Devakī was very beloved by her father, King Devaka, who gave a dowry for her marriage of four hundred elephants beautifully decorataed with golden garlands, ten thousand horses, eighteen hundred chariots, together with two hundred beautiful young maids, adorned with beautiful jewels, who acted as friends of the bride.
While the couple was passing by, an exquisite melody of auspicious vibrations was heard, played by an orchestra of conch shells, trumpets and drums.
The chariot advanced before the crowd driven by Kaṁsa, who was the most wicked and demoniac among the kings of the Bhoja dynasty. Suddenly a voice called Kaṁsa directly, telling him: "You are a great fool Kaṁsa, you lead the carriage with the woman whose eighth sun will vanish you"...
Kaṁsa, who was highly wicked, a demon and a great sinner, did not doubt to grab his sisters hair in his left hand, while with the right hand he pulled his sword, deciding to cut of the head of the poor girl, without having any piety.
Vasudeva then turned to his evil brother in law, trying to calm him down, and told him: "It is impossible that a personality like you, who is the pride of your family, whose qualities are widely praised by great heroes, suffers from such panic of death, and are ready to murder your own sister, a defenseless woman, in her wedding day. You have to understand that for anyone who is born death is sure, anything that begins... ends, all that has a beginning... inevitably has an end... Now, tomorrow, within ten or a hundred years, death is the surest thing for all the embodied beings... while the elements that compose the physical body, earth, water, fire, air and ether, are decomposed, the soul is the proprietor that resides in the body.