Srimad-Bhagavatam: Canto 5 - Chapter 1 - Verse 21

Sanskrit:

एतदेव हि देवा गायन्ति—अहो अमीषां किमकारि शोभनंप्रसन्न एषां स्विदुत स्वयं हरि: ।यैर्जन्म लब्धं नृषु भारताजिरेमुकुन्दसेवौपयिकं स्पृहा हि न: ॥ २१ ॥

ITRANS:

etad eva hi devā gāyanti — aho amīṣāṁ kim akāri śobhanaṁprasanna eṣāṁ svid uta svayaṁ hariḥyair janma labdhaṁ nṛṣu bhāratājiremukunda-sevaupayikaṁ spṛhā hi naḥ

Translation:

Since the human form of life is the sublime position for spiritual realization, all the demigods in heaven speak in this way: How wonderful it is for these human beings to have been born in the land of Bhārata-varṣa. They must have executed pious acts of austerity in the past, or the Supreme Personality of Godhead Himself must have been pleased with them. Otherwise, how could they engage in devotional service in so many ways? We demigods can only aspire to achieve human births in Bhārata-varṣa to execute devotional service, but these human beings are already engaged there.

Purport:

These facts are further explained in Caitanya-caritāmṛta (Ādi 9.41): “One who has taken his birth as a human being in the land of India [Bhārata-varṣa] should make his life successful and work for the benefit of all other people.” There are many facilities in India, Bhārata-varṣa, for executing devotional service. In Bhārata-varṣa, all the ācāryas contributed their experience, and Śrī Caitanya Mahāprabhu personally appeared to teach the people of Bhārata-varṣa how to progress in spiritual life and be fixed in devotional service to the Lord. From all points of view, Bhārata-varṣa is the special land where one can very easily understand the process of devotional service and adopt it to make his life successful. If one makes his life successful in devotional service and then preaches devotional service in other parts of the world, people throughout the world will actually benefit.