“When the cowherd men of Vrindavana, under instruction of Krishna, stopped offering sacrifice to the heavenly King, Indra, the whole tract of land known as Vraja was threatened with being washed away by constant heavy rains for seven days. Lord Krishna, out of His causeless mercy upon the inhabitants of Vraja, held up the hill known as Govardhana with one hand only, although He was only seven years old. He did this to protect the animals from the onslaught of water.” (Shrimad Bhagavatam, 2.7.32)