The word Karuna is usually translated as compassion. The translation is adequate but incomplete. Karu relates to both calling and to tears. Karuna is the capacity to be moved by another's suffering — to have the reality of the other's pain land without the defensive filtering that normally protects the self from what is too real.
In the Krishna theology of the Bhagavata Purana, Karuna is not a secondary divine attribute. It is the mode in which the divine's love reaches toward the suffering world.
The Bhagavata's tenth book contains numerous demonstrations of this. Krishna does not only dance with the Gopis. He lifts the Govardhan mountain to protect the cowherd community from Indra's storm. He defeats the demons that threaten Vrindavan — not in glory, not to demonstrate power, but because those in his care are suffering. The Bhagavata presents this not as heroism but as the natural expression of love that has made others' welfare inseparable from its own.
The eleventh book — the Uddhava Gita, sometimes called the hidden Gita because it has received less attention than the Bhagavad Gita — contains Krishna's final teaching to his friend Uddhava before the departure from this world. And the central instruction is about Karuna:
Mayi ananyena bhavena bhaktim kurvanti ye dridham / Te me sadhutama manye ye me priyas tu nityadha — Those who worship me with undivided devotion are the most saintly. But even dearer to me are those who see me in all beings and all beings in me, and serve them without distinction. The highest form of devotion is not the love that rises toward the divine — it is the love that recognises the divine in the suffering face before it and responds without calculation.
This is the radical social theology of the Bhagavata: genuine Bhakti, genuine love for Krishna, expresses itself as Karuna for all beings — because every being is a form of Krishna. The practitioner who is devoted to Krishna in the temple but indifferent to the person suffering outside the temple has not understood the devotion they are practising.
Chaitanya Mahaprabhu's life is the most complete enactment of this principle. He did not merely teach love for Krishna — he enacted it publicly, dancing in the streets, embracing the outcast, weeping openly for every being's suffering. His Prema-dhama — the abode of love — was not a temple but his own body, animated by Karuna so complete that it dissolved the boundary between sacred and ordinary at every encounter.
The Narada Bhakti Sutras' most precise statement on this: the highest Bhakta does not seek liberation. Does not seek happiness. Does not seek any personal state. The highest Bhakta seeks only to reduce the suffering of every being — because every being is the beloved in a different costume. This is not a moral obligation. It is the natural expression of a love that has become genuinely universal — that has taken the principle of Tat Tvam Asi and made it the operative framework of every encounter.