What was one of the important qualities that Arjuna possessed that made him eligible to receive the Gita?

 Among the Pandavas, there were some who were superior to Arjuna in some respect. Dharmaraja, the eldest brother, was more serene. Why then was the sacred Gita not taught to him? In terms of physical prowess, Bhima was a much stronger person. Why was it not directed to Bhima? Why was it taught to Arjuna? Dharmaraja was the embodiment of Dharma, no doubt. But, he did not have the foresight to visualise the ravages of war. He did not consider the consequences of his action. He became wise only after the event. Bhima had enormous physical strength and valour, but he did not have enough intelligence. But, Arjuna had foresight. He told Krishna, "I would rather be dead than fight against these people, because, if I should win, it would be at the cost of putting them to death and causing much suffering." In contrast to this, Dharmaraja waged the war and when he lost his kith and kin, he sat down in gloom regretting all that had happened! When one acts without foresight, one has to repent for the consequences of the indiscriminate action.

BagavanSri Sri Sri Sathya Sai Baba