The pure devotees, who are always absorbed in the thought of the transcendental lotus feet of Kṛṣṇa and who are always engaged in devotional service in full Kṛṣṇa consciousness, are never to be considered to be in the material world. Śrīla Rūpa Gosvāmī has explained that those who are always engaged in Kṛṣṇa consciousness with body, mind and activities are to be considered liberated even within this body. This is confirmed in the Bhagavad-gītā: those who are engaged in the devotional service of the Lord have already transcended the material position.
Kṛṣṇa appears in order to give a chance to both the devotees and the nondevotees for realization of the ultimate goal of life. The devotees get the direct chance to see Him and worship Him. Those who are not on that platform get the chance to become acquainted with His activities and thus become elevated to the same position.
“Our dear Lord, O supreme controller, when You appear on earth, all the demons like Kaṁsa and Jarāsandha will be vanquished, and all good fortune will be ushered into the world. When You walk on the globe, Your lotus feet will impress on the ground the marks of Your soles, such as the flag, the trident and the thunderbolt. Thus You will grace both the earth and us on the heavenly planets who shall see those marks.
“O dear Lord,” the demigods continued, “You are unborn; therefore we do not find any reason for Your appearance other than for Your pleasurable pastimes.” Although the reason for the appearance of the Lord is stated in the Bhagavad-gītā (He descends just to give protection to the devotees and vanquish the nondevotees), actually He descends for His pleasure-meeting with the devotees, not really to vanquish the nondevotees. The nondevotees can be vanquished simply by one kick of material nature. “The actions and reactions of material nature (creation, maintenance and annihilation) are being carried out automatically. But simply by taking shelter of Your holy name the devotees are sufficiently protected, because Your holy name and Your personality are nondifferent.” The protection of the devotees and the annihilation of the nondevotees are actually not the business of the Supreme Personality of Godhead. When He descends, it is just for His transcendental pleasure. There cannot be any other reason for His appearance.
“Our dear Lord, You are appearing as the best of the Yadu dynasty, and we are offering our respectful humble obeisances unto Your lotus feet. Before this appearance, You also appeared as the fish incarnation, as the horse incarnation, as the tortoise incarnation, as the half-man, half-lion incarnation, as the boar incarnation, as the swan incarnation, as King Rāmacandra, as Paraśurāma and as many other incarnations. You appeared just to protect the devotees, and we request You in Your present appearance as the Supreme Personality of Godhead Himself to give us similar protection all over the three worlds and remove all obstacles for the peaceful execution of our lives.
“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.