So we see that Bhagavad-gītā is instructed to Arjuna especially because Arjuna was a devotee of the Lord, a direct student of Kṛṣṇa, and His intimate friend. Therefore Bhagavad-gītā is best understood by a person who has qualities similar to Arjuna's. That is to say he must be a devotee in a direct relationship with the Lord. As soon as one becomes a devotee of the Lord, he also has a direct relationship with the Lord. That is a very elaborate subject matter, but briefly it can be stated that a devotee is in a relationship with the Supreme Personality of Godhead in one of five different ways:
1. One may be a devotee in a passive state;
2. One may be a devotee in an active state;
3. One may be a devotee as a friend;
4. One may be a devotee as a parent;
5. One may be a devotee as a conjugal lover.