The tenth book of the Bhagavata Purana, recounting Krishna's birth and youth in Vrindavan, supplies Gaudiya Vaishnavism with its central scripture and its devotional imagery: Krishna as cowherd, flute player and beloved of the gopis, the cowherd women whose love for him becomes the model for the devotee's own longing. Chaitanya and the Goswamis read this material less as historical narrative than as a map of the soul's relationship to God, with Radha's devotion to Krishna treated as the highest expression of loving surrender.
Practice centers on bhakti expressed through the body and the voice rather than through philosophical contemplation alone: chanting Krishna's names, singing devotional poetry, ritual worship of temple images, and pilgrimage to sites in and around Vrindavan associated with episodes from his life. The tradition holds that repeating the divine name with sincere feeling is itself sufficient for spiritual progress, a teaching that lowered the barrier to participation compared with traditions requiring extensive Sanskrit learning.
Gaudiya theology describes several types of relationship a devotee can hold toward Krishna, ranging from reverent awe to the intimate love of a parent, friend or lover, with the last regarded as the most complete. This framework, worked out in detail by the Goswamis, gave the movement a systematic account of devotional experience that later Vaishnava movements across India, and eventually abroad, drew on directly.