…that was the position of the Pandavas; although Krsna is the Supreme Personality of Godhead, the greatest among all greats, He remained with those royal brothers, being attracted by their devotion, by their friendship and by their love. That is the proof of how great this process of devotional service is. It can attract even the Supreme Personality of Godhead. God is great, but devotional service is greater than God because it attracts Him. People who are not in devotional service can never understand what great value there is in rendering service to the Lord.

(From Nectar of Devotion by Srila Prabhupada)