What does Chapter 3 say is the simplest spiritual path for the current era, and how does it compare to the practices of past ages?

According to the teachings in Chapter 3, the simplest means for achieving the supreme goal (Paramartha) in the Kali Age is 'singing the stories of the Name.' This is presented as a more accessible path compared to the practices of previous eras. For instance, the Kruta Age required 'control of mind and senses,' the Treta Age emphasized 'sacrifice,' and the Dwapara Age focused on 'worship.' The chapter further clarifies that for everyone in the current age, from Brahmins to women, Shudras, or those of low caste, the primary means is listening to the stories of the Guru, which requires no great exertion beyond focused attention.