Srila Rupa Goswami asseverates that Parjanya Maharaja performed transcendental austerities, including fasting and fervently praying to Lord Narayana, to have a worthy grandson. Partly due to this reason, Sri Krishna appeared as the son of Nanda Maharaja, and the grandson of Parjanya Maharaja. Transcendental austerity is required to attain the mercy of the Lord; why not?