In other words, to appear in the material world the Lord selected His mother and father—namely Pṛśni and Sutapā, respectively. Whenever the Lord comes as a human being, He must have a mother and a father, so He selected Pṛśni and Sutapā perpetually as His mother and father. And on account of this, neither Pṛśni nor Sutapā could ask the Lord for liberation. Liberation is not so important as the transcendental loving service of the Lord. The Lord could have awarded Pṛśni and Sutapā immediate liberation, but He preferred to keep them within this material world for His different appearances, as will be explained in the following verses. On receiving the benediction from the Lord to become His father and mother, Pṛśni and Sutapā retired from the activities of austerity and lived as husband and wife in order to beget a child who was the Supreme Lord Himself.
In due course of time Pṛśni became pregnant and gave birth to the child. The Lord spoke to Devakī and Vasudeva: “At that time My name was Pṛśnigarbha. In the next millennium you took birth as Aditi and Kaśyapa, and I became your child of the name Upendra. At that time My form was just like a dwarf, and for this reason I was known as Vāmanadeva. I gave you the benediction that I would take birth as your son three times. The first time I was known as Pṛśnigarbha, born of Pṛśni and Sutapā, in the next birth I was Upendra, born of Aditi and Kaśyapa, and now for the third time I am born as Kṛṣṇa from you, Devakī and Vasudeva. I have appeared in this Viṣṇu form just to convince you that I am the same Supreme Personality of Godhead again taken birth. I could have appeared just like an ordinary child, but in that way you would not have believed that the Supreme Personality of Godhead had taken birth in your womb. My dear father and mother, you have therefore raised Me many times as your child, with great affection and love, and I am therefore very much pleased and obliged to you. And I assure you that this time you shall go back home, back to Godhead, on account of your perfection in your mission. I know you are very concerned about Me and afraid of Kaṁsa. Therefore I order you to take Me immediately to Gokula and exchange Me for the daughter who has just been born to Yaśodā.”
Having spoken thus to His father and mother, the Lord turned Himself into an ordinary child in their presence and remained silent.
Being ordered by the Supreme Personality of Godhead, Vasudeva prepared to take his son from the delivery room, and exactly at that time, a daughter was born to Nanda and Yaśodā. She was Yogamāyā, the internal potency of the Lord. By the influence of this internal potency, Yogamāyā, all the residents of Kaṁsa’s palace, especially the doorkeepers, were overwhelmed with deep sleep, and all the palace doors opened, although they were barred and shackled with iron chains. The night was very dark, but as soon as Vasudeva took Kṛṣṇa on his lap and went out, he could see everything just as in the sunlight.
In the Caitanya-caritāmṛta it is said that Kṛṣṇa is just like sunlight and that wherever there is Kṛṣṇa, the illusory energy, which is compared to darkness, cannot remain. When Vasudeva was carrying Kṛṣṇa, the darkness of the night disappeared. All the prison doors automatically opened. At the same time there was thunder in the sky and severe rainfall. While Vasudeva was carrying his son Kṛṣṇa in the falling rain, Lord Śeṣa in the shape of a serpent spread His hood over the head of Vasudeva so that he would not be hampered by the rainfall. Vasudeva came onto the bank of the Yamunā and saw that the water of the Yamunā was roaring with waves and that the whole span was full of foam. Still, in that furious feature, the river gave passage to Vasudeva to cross, just as the great Indian Ocean gave a path to Lord Rāma when He was bridging over the gulf. In this way Vasudeva crossed the river Yamunā. On the other side, he went to the place of Nanda Mahārāja, situated in Gokula, where he saw that all the cowherd men were fast asleep. He took the opportunity to silently enter the house of Yaśodā, and without difficulty he exchanged his son for the baby girl newly born there. Then, after entering the house very silently and exchanging the boy for the girl, he returned to the prison of Kaṁsa and silently put the girl on the lap of Devakī. He again clamped the shackles on himself so that Kaṁsa could not recognize that so many things had happened.