Aradhana embodies the mood and emotions of devotion exemplified by Srimati Radharani, which is also the very essence of Sri Chaitanya Mahaprabhu’s teachings.
Brahma, having received knowledge directly from the Lord, is the best knower of all the scriptures. That is why he declares that there is no other way for deliverance in Kaliyuga than chanting the Hare Krishna maha-mantra.