What transformative effects does meeting a saint like Sainath have on a person, as described in this chapter?

According to the account in Chapter 28, the encounter with a saint like Sainath brings about a profound inner transformation. When the accumulated karma of past lives leads one to the company of saints, "the darkness born of delusion is destroyed." The chapter details that "the fire of discrimination becomes ignited," which leads to a detachment from worldly enjoyments. This process ultimately results in the destruction of accumulated karma and makes one's life successful. The devotion becomes so all-consuming that while "gazing at Sainath, one does not get any other interest," and even with eyes closed, the devotee holds Sainath in their heart.