Based on the story of the Tarkhad family, what was the significance of the Naivedya offering?

In the narrative of the Tarkhad family from Chapter 9, the daily Naivedya, or food offering, symbolizes the pinnacle of devotion and a test of commitment. For the son, it was an indispensable daily ritual, and his primary concern about traveling was the potential break in this service. For the father, Babasaheb Tarkhad, the act of offering sugar candy became a solemn vow he took upon himself to facilitate his family's pilgrimage. The profound remorse he felt after forgetting the offering just once demonstrates that it was not seen as a mundane task but as a sacred duty. His reaction elevates the simple act to a significant spiritual commitment, the failure of which was considered a "great sin."