Originally posted by: raj_a_p
Something to mull over while Mahabharat moves to Shreemad Bhagvadpuran
By virtue of his inner purity and his loyalty to Lord Krishna, Arjuna had the fortune of receiving the divine knowledge of the Bhagavad-Gita. In the Mahabharata war he played a very crucial role by slaying such warriors as Bhishma, Karna, Dronacharya and Jayadhrata. The character of Arjuna symbolizes purity, integrity, loyalty and valor. He had many temptations and dilemmas in his life but always chose to remain on the side of God and with his brothers in their trials and tribulations.
He could have been a great king in his own right, but he remained loyal to his elder brother Dharmaraj who ascended the throne of Hastinapur by virtue of being the eldest in the family. After the battle of Mahabharata, he assisted his brother greatly in expanding their empire by annexing several outlying kingdoms and defeating warring tribes. Strangely after the passing away of Lord Krishna, he forgot most of his skills as an archer and spent the rest of his life in humility and devotion. Arjuna serves as an example of a great human being, a dutiful householder, a loyal brother, a great warrior, a devout husband and a sincere devotee of God.
Source: http://www.hinduwebsite.com/hinduism/concepts/arjuna.asp