I'm skeptical about spirituality. How did Sai Baba deal with doubters who came to see him?

Sai Baba dealt with skeptics not through argument, but through direct, personal experience that addressed their specific doubts. A perfect example is the story of Boss Dharamsee, a man who came to Shirdi with a "clinical scrutiny." As detailed in Chapter 35, Dharamsee internally questioned Baba's sainthood because he was offered grapes with seeds, which he disliked. In response to this unspoken doubt, Baba commanded him to eat the grapes, which miraculously turned out to be seedless for him alone. This experience shattered Dharamsee's ego and skepticism, replacing it with profound love and devotion for the saint. His previous resolves vanished, and a firm determination to visit Shirdi was born in his heart.