Every living being, out of the many, many billions and trillions of living beings, has a particular relationship with the Lord eternally. That is called svarūpa. By the process of devotional service, one can revive that svarūpa, and that stage is called svarūpa-siddhi—perfection of one's constitutional position. So Arjuna was a devotee, and he was in touch with the Supreme Lord in friendship.