The Vedic knowledge is mother and the spiritual master is the father. So the second birth. Therefore, they are called dvija, twice born

Expressions researched:
"The Vedic knowledge is mother and the spiritual master is the father. So the second birth. Therefore, they are called dvija, twice born"

Bhagavad-gita As It Is Lectures

The Vedic knowledge is mother and the spiritual master is the father. So the second birth. Therefore, they are called dvija, twice born. So dvija-bandhūnām, those who are not actually twice born but born in the family of dvijas. Therefore they are called dvija-bandhu, "not dvija, friends of the dvijas." Dvija-bandhu. One may become a friend of the dvija.

Lecture on BG 1.41-42 -- London, July 29, 1973:

So Bhagavad-gītā is not meant for the demons or the abhaktas. The first condition is that he must be a devotee of Kṛṣṇa. Then it will be revealed. Otherwise it is not possible. Nāhaṁ prakāśaḥ sarvasya yoga-māyā-samāvṛitaḥ (BG 7.25). Na māṁ duṣkṛtino mūḍhā prapadyante narādhamāḥ (BG 7.15). These things are there. So if one is devotee of Kṛṣṇa, he can understand Bhagavad-gītā very easily. Just like Arjuna understood within half an hour. Others, they cannot understand. In one sense, the people at that time were so educated, advanced, that they could talk about the Absolute Truth and understand within half an hour, one hour. There was no need of books in those days. People were so sharp memoried. Once heard from the spiritual master they'll never forget. With the advancement of Kali, so many things will reduce. One of them is the memory will be reduced. People will be weaker. There will be no more mercy. The brain will not be so powerful or sharp. These things are described. So we cannot even imagine what kind of brain Arjuna possessed. Another thing, this Bhagavad-gītā is part of Mahābhārata. And the Mahābhārata was written for strī-śūdra-dvija-bandhūnāṁ trayi na śruti-gocarāḥ (SB 1.4.25). Strī, woman, strī, śūdra and dvija-bandhu. Dvija-bandhu means a person born in high family, brāhmaṇa, kṣatriya, vaiśya, at least brāhmaṇa, kṣatriya, but he's not qualified brāhmaṇa or kṣatriya. He's called dvija-bandhu, the friend of the twice-born. The brāhmaṇa, kṣatriya, vaiśya, they are twice-born. One birth is father and mother; another birth is by the spiritual master, by Vedic knowledge. The Vedic knowledge is mother and the spiritual master is the father. So the second birth. Therefore, they are called dvija, twice born. So dvija-bandhūnām, those who are not actually twice born but born in the family of dvijas. Therefore they are called dvija-bandhu, "not dvija, friends of the dvijas." Dvija-bandhu. One may become a friend of the dvija. One may become a son of a high-court judge, but that does not mean he's also high-court judge. But now they are taking: "Because my father is brāhmaṇa, therefore I am brāhmaṇa." No. That was not accepted. Your father may be brāhmaṇa, but if you are not qualified brāhmaṇa, you cannot be called a brāhmaṇa. You can be called dvija-bandhu. So this Mahābhārata was written: strī-śūdra-dvija-bandhūnāṁ trayi na śruti gocarāḥ (SB 1.4.25). Woman and dvija-bandhu and the śūdras, it is very difficult for them to understand the Vedic literatures directly, because they have no advanced knowledge or education. Therefore the same thing. The Vedic knowledge was described in the Mahābhārata. Because it is history. Everyone is interested to read history. So through history, the Vedic knowledge was imparted. Therefore, Mahābhārata is called the fifth Vedas. There are four Vedas, Sama, Yajur, Ṛk, Atharva. And Mahābhārata is fifth Veda. They are meant for this stri, śūdra, dvija-bandhu. So Bhagavad-gītā is within the Mahābhārata. So actually it was meant for the less intelligent class of men. But, at the present moment, the highest intelligent class of men cannot understand. Just see the difference. Formerly, 5000 years, this was meant for the less intelligent class of men, and we have deteriorated so much that the so-called highest intelligent class of men cannot understand this Bhagavad-gītā. And he is posted as the professor in the Oxford University.