Dear mother Devakī, within your womb is the Supreme Personality of Godhead, appearing along with all His plenary extensions. He is the original Personality of Godhead, appearing for our welfare. Therefore you should not be afraid of your brother, the King of Bhoja. Your son Lord Kṛṣṇa, who is the original Personality of Godhead, will appear for the protection of the pious Yadu dynasty. The Lord is appearing not alone but accompanied by His immediate plenary portion, Baladeva.”
Devakī was very much afraid of her brother Kaṁsa because he had already killed so many of her children. So she was very anxious about Kṛṣṇa. In the Viṣṇu Purāṇa it is stated that in order to pacify Devakī, all the demigods, along with their wives, used to visit her to encourage her not to be afraid that her son would be killed by Kaṁsa. Kṛṣṇa, who was within her womb, was to appear not only to diminish the burden of the world but specifically to protect the interests of the Yadu dynasty, and certainly to protect Devakī and Vasudeva. It is understood that Kṛṣṇa had been transferred from the mind of Vasudeva to the mind of Devakī, and from there to her womb. Thus all the demigods worshiped Devakī, the mother of Kṛṣṇa.
After thus worshiping the transcendental form of the Lord, all the demigods, with Lord Brahmā and Lord Śiva placed in front, departed for their heavenly abodes.