According to Chapter 38, what is the scriptural basis for the importance of charity, and why is food donation considered the highest form of it?

Chapter 38 provides a scriptural context for the significance of charity by outlining the primary virtue for each cosmic age: Penance in the Krita age, Knowledge in the Treta, Sacrifice in the Dvapara, and Charity in the current Kali age. Within the realm of charity, food donation (Annadan) is presented as the foremost deed and the 'highest secret for quenching hunger.' Its superiority is asserted because food is equated with Para-Brahman (the Supreme Reality), from which all beings are born and into which they eventually merge. As Chapter 38 states, the Shrutis (Vedas) serve as proof for the greatness of food donation, making it a practice even Baba followed.