Can you summarize the key messages from Chapter 47 regarding the law of Karma and the importance of human birth?

Chapter 47 of the Shri Sai Satcharitra provides a profound commentary on the law of Karma, describing it as very deep and difficult for even the highly learned to comprehend. The chapter emphasizes that one's birth and circumstances are a direct result of past actions, stating, "As the action, so the hearing." It warns that committing great sins can lead to a birth that corresponds exactly to one's deeds. Consequently, the text underscores the preciousness of human birth, urging individuals not to waste this priceless opportunity. It defines a truly wise person, as per the teachings in this chapter, as one who strives for self-knowledge before the body perishes, thereby making the best use of their human life.