We are addressing, Hare Krsna, Hare Krsna: "O the energy of the Lord, O the Lord, please accept me." That's all. "Please accept me." We have no other prayer. "Please accept me." Lord Caitanya taught that we should simply cry, and we shall simply pray for accepting us. That's all. So this vibration is simply a cry for addressing the Supreme Lord, requesting Him, "Please accept me. Please accept me."
From Srila Prabhupada's lecture on Bhagavad-gita 8.21-22 — New York, November 19, 1966