In Vrndavana all the pure devotees pray for the mercy of Srimati Radharani, the pleasure potency of Lord Krsna. Srimati Radharani is a tenderhearted feminine counterpart of the supreme whole, resembling the perfectional stage of the worldly feminine nature. Therefore, the mercy of Radharani is available very readily to the sincere devotees, and once She recommends such a devotee to Lord Krsna, the Lord at once accepts the devotee’s admittance into His association.
From Srila Prabhupada’s purport to SB 2.3.23