Here another question may be raised: If the Supreme Lord is all-powerful, why should He try to reform His devotee by putting him in distress? The answer is that when the Supreme Personality of Godhead puts His devotee in distress, it is not without purpose. Sometimes the purpose is that in distress a devotee’s feelings of attachment to Kṛṣṇa are magnified. For example, when Kṛṣṇa, before leaving the capital of the Pāṇḍavas for His home, asked Kuntīdevī for permission to leave, she said, “My dear Kṛṣṇa, in our distress You were always present with us. Now, because we have been elevated to a royal position, You are leaving us. I would therefore prefer to live in distress than to lose You.” When a devotee is put into a situation of distress, his devotional activities are accelerated. Therefore, to show special favor to a devotee, the Lord sometimes puts him into distress. Besides that, it is stated that the sweetness of happiness is sweeter to those who have tasted bitterness. The Supreme Lord descends to this material world just to protect His devotees from distress. In other words, if devotees were not in a distressed condition, the Lord would not have come down. As for His killing the demons, or miscreants, this can be easily done by His various energies, just as many asuras are killed by His external energy, goddess Durgā. Therefore the Lord does not need to come down personally to kill such demons, but when His devotee is in distress He must come. Lord Nṛsiṁhadeva appeared not in order to kill Hiraṇyakaśipu but to save Prahlāda and to give him blessings. In other words, because Prahlāda Mahārāja was put into very great distress, the Lord appeared.
When after the dense, dark night there is finally sunrise in the morning, it is very pleasant; when there is scorching heat, cold water is very pleasant; and when there is freezing winter, hot water is very pleasant. Similarly, when a devotee, after experiencing the distress of the material world, relishes the spiritual happiness awarded by the Lord, his position is still more pleasant and enjoyable.
The Lord continued: “When My devotee is bereft of all material riches and is deserted by his relatives, friends and family members, because he has no one to look after him he completely takes shelter of the lotus feet of the Lord.” Śrīla Narottama dāsa Ṭhākura has sung in this connection, “My dear Lord Kṛṣṇa, O son of Nanda Mahārāja, You are now standing before me with Śrīmatī Rādhārāṇī, the daughter of King Vṛṣabhānu. I am now surrendering unto You. Please accept me. Please do not kick me away. I have no shelter other than You