Every one of us may possess some riches, maybe little wise or very . . . not very strong, little strong. Little, little quantity of these opulences are there in every person. But when you find a person that nobody possesses more than him all these opulences . . . the Sanskrit word is asama ūrdhva. Asama means "equally," and . . . sama means equally, and asama means "without being equal." And ūrdhva means "above." When you find somebody, above Him or equal to Him anyone else is as rich, as famous, as opulent, as wise, as beautiful, that person is called God. This is the definition of God. "God is great" means nobody is equal to Him, nobody is above Him in any kinds of opulences. That is called bhagavān.
So here it is said . . . Vyāsadeva, he writes . . . this Bhagavad-gītā is one of the chapter of Mahābhārata. Mahābhārata means the history of greater India. Formerly Bhārata . . . "India" is given name by the Westerners, but real name is Bhārata, Bhārata-varṣa. This planet was formerly known as Ilāvṛta-varṣa, and later on, after the Emperor Bharata, this planet was known as Bhārata-varṣa. So Bhārata-varṣa means not only India, but the whole planet. At least five thousand years ago it was known as Bhārata-varṣa. Bhārata-varṣa name is there, but it indicates only India. So this Bhagavad-gītā is a chapter of Mahābhārata. Perhaps you know the book Mahābhārata, "Greater Bhārata-varṣa," "The History of the Greater Bhārata-varṣa." That is Mahābhārata.
So the background of this Bhagavad-gītā is that there was worldwide fight, battle, called the Battle of Kurukṣetra. Kurukṣetra, the place is still there. If some of you went to India, might have seen it is near Delhi, New Delhi. The railway station is called also Kurukṣetra. So there was a battle five thousand years ago. The parties were two cousin-brothers, and this Bhagavad-gītā was spoken by Kṛṣṇa, the Supreme Personality of Godhead, Bhagavān. Therefore it is called bhagavān uvāca.
So He is teaching Arjuna bhakti-yoga. Yoga means the means by which you can contact the Supreme. That is called yoga. Another, yoga means linking. So there are many types of yoga system for linking ourself with the Supreme Absolute Truth. The Absolute Truth is realized in three phases: impersonal, localized and personal. In the Śrīmad-Bhāgavatam it is said that the Absolute Truth is realized by different person according to different angle of vision. Just like if you see from a distant place one mountain, you find something cloudy. If you go nearer, then you find it is something green. And if you enter actually the mountain, then you find there are so many varieties—there are trees, there are houses, there are living entities, animals, everything. The object is one, but according to the vision of the person, from length of distance, the same object is realized in different phases.
Therefore the Bhāgavata says, vadanti tat tattva-vidas tattvaṁ yaj jñānam advayam (SB 1.2.11). The object is one, but according to the understanding of the same one, somebody is realizing the Absolute Truth as impersonal Brahman, and somebody is realizing the Absolute Truth as localized Paramātmā, and somebody is realizing the same Absolute Truth as the Supreme Personality of Godhead. Ultimately, the Absolute Truth is Supreme Personality of Godhead, Bhagavān. Therefore Vyāsadeva, the compiler of Mahābhārata, he says, śrī bhagavān uvāca. So our this Kṛṣṇa consciousness movement . . . the bhagavān is called Kṛṣṇa. He has got many millions of name, but "Kṛṣṇa" name is the chief. "Kṛṣṇa" name means the attractiveness, all-attractive. God must be all-attractive. It is not that God is attractive for one person, not for the other. No. God is attractive for all living entities. Therefore you see the picture of Kṛṣṇa: He is loving the calves and cows, He is loving the trees, He is loving the gopīs, He is loving the cowherds boy. For Him, for God, everyone is lovable object, because everyone is son of God.