Just try to understand that Mahābhārata was originally designed for the less-intelligent class of men. Less intelligent . . . who are less-intelligent class of men? The woman class or the laborer class, and those who are born in high family but their qualities are not so improved.
Suppose a boy is born in a Brāhmin family, but his quality is just like Śūdra or laborer class. The people will not accept. Just like if I am born of a Brāhmin family, so they will ask my qualification, how I am qualified. So those who are born in high family but not qualified according to the family tradition, they are called dvija-bandhu. Dvija.
Dvija means twice-born. Dvi means two, and ja means birth. The Śudras have one birth, one birth by the father and mother. But those who are higher caste . . . just like a man may be born in a low family or poor family, but by his intelligence he gets another birth. He becomes very rich man or very learned man, very intelligent man, very philosophic . . . that life is from the university. Similarly, dvija means first birth is from the father-mother, and the next birth is accepting a spiritual master. The next birth is . . . father is the spiritual master, and the Vedas are the mother.
So those who accept the spiritual master as father and the Vedic knowledge as mother, they are called dvija, twice-born. Twice-born. That means cultured. Cultured family. So those who are born in cultured family, but . . . a son is born in a cultured family, but his cultural knowledge is very poor, he is called dvija-bandhu. So woman class, laborer class and those who are born in higher family but intelligence is very poor, they are called dvija-bandhu. And for these classes of men the Mahābhārata was compiled. That means Vedic knowledge explained in simple historical facts.
The Mahābhārata, the basic principle of Mahābhārata is the fighting between the two groups of royal family, and on that politics, sociology, religion . . . but those who have read Mahābhārata, they will be surprised how elevated knowledge are there in Mahābhārata. But they were meant for Śūdras and, I mean to say, less-intelligent class of men.