How Krsna becomes attracted by the devotional service of His devotees is described by Narada in the Srimad-Bhagavatam, Seventh Canto, Tenth Chapter, 37th verse. There Narada addresses King Yudhisthira while the King is appreciating the glories of the character of Prahlada Maharaja. A devotee always appreciates the qualities of other devotees.” i So 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.

From “The Nectar of Devotion” by Srila Prabhupada