Srila Prabhupada often quoted Narottama Das Thakur, Brajendra nandana jei saci suta hoilo sei, balarama hoilo nitai. Son of Nanda Maharaj came as son of Mother Saci and Balram came as Nitai.
When Nimai was just 4 months old, the neighbours would gather around Him and chant the holy names. Upon hearing that chanting He would smile and dance but if they stopped He would begin to cry. To see Him cry was worse than death and to see Him smile was the ultimate perfection of their lives. Their love for Nimai was unprecedented. They loved little Nimai more than their own family members, more than anything else in their lives. So all day long people would come and chant the holy names of Krishna and make Nimai happy. In this way since His infancy He established the yugadharma of congregational chanting of the holy names.
– Radhanath Swami